mouryat9/CogBench huggingface dataset:
Subject: chemistry
Question: The decomposition of hydrogen peroxide, H2O2, has been used to provide thrust in the control jets of various space vehicles. Using the data inAppendix G, determine how much heat is produced by the decomposition of exactly 1 mole of H2O2under standard conditions.2H2O2(l)⟶2H2O(g)+O2(g)2H2O2(l)⟶2H2O(g)+O2(g)
Subject: mathematics
Question: Listed are 29 ages for Academy Award winning best actorsin order from smallest to largest. 18; 21; 22; 25; 26; 27; 29; 30; 31; 33; 36; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74; 76; 77
Subject: mathematics
Question: Write the inequality shown by the graph with the boundary line y = \frac{2}{3}x - 3.
Subject: biology
Question: The ________ collects data and conducts epidemiologic studies in the United States.
Subject: chemistry
Question: Open theBuild an Atom simulationand click on the Atom icon. (a) Pick any one of the first 10 elements that you would like to build and state its symbol. (b) Drag protons, neutrons, and electrons onto the atom template to make an atom of your element.State the numbers of protons, neutrons, and electrons in your atom, as well as the net charge and mass number. (c) Click on “Net Charge” and “Mass Number,” check your answers to (b), and correct, if needed. (d) Predict whether your atom will be stable or unstable. State your reasoning. (e) Check the “Stable/Unstable” box. Was your answer to (d) correct? If not, first predict what you can do to make a stable atom of your element, and then do it and see if it works. Explain your reasoning.
Subject: business
Question: LO8.5Identify several causes of an unfavorable labor rate variance.
Subject: astronomy
Question: What does a planet need in order to retain an atmosphere? How does an atmosphere affect the surface of a planet and the ability of life to exist?
Subject: mathematics
Question: If the ethnicities of COVID-19 cases victims followed the ethnicities of the total county population, fill in the expected number of cases per ethnic group.Perform a goodness-of-fit test to determine whether the occurrence of COVID-19 cases follows the ethnicities of the general population of Santa Clara County.
Subject: mathematics
Question: \frac{x^{3} - 2x^{2} + 4x + 4}{x - 2}
Subject: mathematics
Question: ∑n=1∞2n+47n∑n=1∞2n+47n
Subject: physics
Question: Explain how you can use the graph of position vs. time  to describe the change in velocity over time. Identify the time (ta,tb,tc,td, orte) at which at which the instantaneous velocity is greatest, the time at which it is zero, and the time at which it is negative.
Subject: biology
Question: What problem is faced by organisms that live in fresh water?
Subject: business
Question: Is a dealer or a broker more likely to be a market maker? In your answer, define the activities of a market maker.
Subject: chemistry
Question: Calculate the ionization constant for each of the following acids or bases from the ionization constant of its conjugate base or conjugate acid: (a) F− (b)NH4+NH4+ (c)AsO43−AsO43− (d)(CH3)2NH2+(CH3)2NH2+ (e)NO2−NO2− (f)HC2O4−HC2O4−(as a base)
Subject: mathematics
Question: What would happen to the confidence interval if the level of confidence were 95%?
Subject: chemistry
Question: Iron(III) sulfate [Fe2(SO4)3] is composed of Fe3+andSO42−SO42−ions. Explain why a sample of iron(III) sulfate is uncharged.
Subject: chemistry
Question: Most mixtures of hydrogen gas with oxygen gas are explosive. However, a mixture that contains less than 3.0 % O2is not. If enough O2is added to a cylinder of H2at 33.2 atm to bring the total pressure to 34.5 atm, is the mixture explosive?
Subject: psychology
Question: When is the neonatal behavioral assessment scale typically performed?
Subject: political_science
Question: Explain the difference between thecollective rightsandindividual rightsviews of the Second Amendment. Which of these views did the Supreme Court’s decision inDistrict of Columbia v. Hellerreflect?
Subject: biology
Question: A diploid, multicellular life-cycle stage that gives rise to haploid cells by meiosis is called a ________.
Subject: physics
Question: (a) Calculate the energy released in the neutron-induced fission reaction {{n + {}^{\text{239}}}\text{Pu}\rightarrow{}^{\text{96}}{\text{Sr} + {}^{\text{140}}}{\text{Ba} + 4n}}, given m({}^{\text{96}}\text{Sr}{) = \text{95}}\text{.}\text{921750 u} and m({}^{\text{140}}\text{Ba}{) = \text{139}}\text{.}\text{910581 u} . (b) Confirm that the total number of nucleons and total charge are conserved in this reaction.
Subject: psychology
Question: Scientific hypotheses are ________ and falsifiable.
Subject: physics
Question: If the Sun suddenly turned off, we would not know it until its light stopped coming. How long would that be, given that the Sun is 1.496\ \times \ 10^{11}\ \text{m} away?
Subject: chemistry
Question: An alternate way to state Avogadro’s law is “All other things being equal, the number of molecules in a gas is directly proportional to the volume of the gas.” (a) What is the meaning of the term “directly proportional?” (b) What are the “other things” that must be equal?
Subject: physics
Question: True or False: A person accelerates while walking on the ground by exerting force F1. The ground in turn exerts force F2on the person. F1and F2are equal in magnitude but act in opposite directions. The person is able to accelerate because the two forces act on the different systems and the net force acting on the person is nonzero.
Subject: business
Question: A multiple choice test has a probability any question will be guesses
correctly of 0.25. There are 100 questions, and a student guesses at all
of them. Use the normal distribution to approximate the binomial
distribution, and determine the probability at least 30, but no more
than 32, questions will be guessed correctly.
Subject: psychology
Question: Analyze the reasons behind the common conflicts between adolescents and their parents or caregivers. How do changes in autonomy, cognitive development, and emotional intensity contribute to these conflicts? Include an example from your own adolescence where a conflict arose with your parent(s) or caretaker(s), and reflect on how this situation was resolved (or left unresolved).
Subject: economics
Question: How does monopsony affect the equilibrium wage and employment levels?
Subject: sociology
Question: The measure that compares the number of men to women in a population is ______.    A. cohort   B. sex ratio   C. baby Boomer   D. disengagement
Subject: economics
Question: How does the cost of “saving” jobs in protected industries compare to the workers’ wages and salaries?
Subject: astronomy
Question: What observations from SN 1987A helped confirm theories about supernovae?
Subject: physics
Question: In our study of diffraction by a single slit, we assume that the length of the slit is much larger than the width. What happens to the diffraction pattern if these two dimensions were comparable?
Subject: mathematics
Question: A tree with eight vertices, exactly two of degree three.
Subject: nursing
Question: The patient care technician is assisting a client with Parkinson’s disease during mealtime and reports the client began to drool and cough while eating. Which action is the most appropriate from the nurse?
Subject: business
Question: [LO 12.1](12-1-identify-and-describe-current-liabilities) The following is selected financial data from Block Industries:  How much does Block Industries have in current liabilities?    A. $19,800   B. $18,300   C. $12,300   D. $25,800
Subject: mathematics
Question: Use the set of ordered pairs to find the domain and the range.{(−3,9),(−2,4),(−1,1),(0,0),(1,1),(2,4),(3,9)}
Subject: psychology
Question: The sociocultural perspective looks at you, your behaviors, and your symptoms in the context of your ________.
Subject: psychology
Question: According to the U.S. Department of Education, approximately what percentage of students enrolled in a two- or four-year degree program change their major before graduating?
Subject: physics
Question: True or false—The high-voltage wires that you see connected to tall metal-frame towers are held aloft by insulating connectors, and these wires are wrapped in an insulating material.
Subject: business
Question: LO1.4Imagine that you have just been elected president of your university’s student senate. Assume the university is considering constructing a new student union—a place that offers a variety of stores, restaurants, and entertainment option for students—and has asked the student senate to develop a formal position in support or opposition of the new student union. Identify the stakeholders involved in this decision. Discuss the relevant considerations that each stakeholder might have.Discuss the financial information that might be helpful in formulating the student senate position.Discuss the nonfinancial information that might be helpful in formulating the student senate position.
Subject: biology
Question: Echinoderms have _____.
Subject: mathematics
Question: Find the taxable income for a person who has $81,200 in earnings, $1,250 reported on a 1099-INT for a savings account, $5,400 reported on a 1099-MISC for a contract job they did, paid $5,250 in mortgage interest, paid $4,700 in property taxes, and has $4,200 in bond interest.
Subject: history
Question: Describe the multiple groups and leaders that emerged in the fight for the Progressive agenda, including women’s rights, African American rights, and workers’ rights. How were the philosophies, agendas, strategies, and approaches of these leaders and organizations similar and different? What made it difficult for all Progressive activists to present a united front?
Subject: chemistry
Question: Photons of infrared radiation are responsible for much of the warmth we feel when holding our hands before a fire. These photons will also warm other objects. How many infrared photons with a wavelength of 1.5××10−6m must be absorbed by the water to warm a cup of water (175 g) from 25.0 °C to 40 °C?
Subject: nursing
Question: A middle-aged client with a history of alcohol use disorder is admitted to an acute care setting with symptoms of severe anemia. The nurse anticipates what nutrient(s) to be deficient?
Subject: history
Question: Which of the following didnotinfluence the eventual passage of the Nineteenth Amendment? women’s contributions to the war effortthe dramatic tactics and harsh treatment of radical suffragiststhe passage of the Volstead Actthe arguments of President Wilson’s daughter
Subject: nursing
Question: A nurse is caring for a pregnant client who is in labor. Which of the following statements accurately describes the concept of positive feedback in the context of labor?
Subject: mathematics
Question: What is the measure of an interior angle of a regular octagon?
Subject: mathematics
Question: y″+2y′+y=0y″+2y′+y=0
Subject: physics
Question: Show that, as stated in the text, a force \textbf{F}_{\bot}{} exerted on a flexible medium at its center and perpendicular to its length (such as on the tightrope wire in [Figure 4.16](4-5-normal-tension-and-other-examples-of- forces) ) gives rise to a tension of magnitude T = \frac{F_{\bot}}{2\ \text{sin}\ (\theta)} .
Subject: chemistry
Question: For the scenario in the previous question, how many electrons moved through the circuit?
Subject: biology
Question: In which direction would an MRI scanner move to produce sequential images of the body in the frontal plane, and in which direction would an MRI scanner move to produce sequential images of the body in the sagittal plane?
Subject: biology
Question: What pathogen is the most important contributor to biofilms in plaque?    A. _Staphylococcus aureus_   B. _Streptococcus mutans_   C. _Escherichia coli_   D. _Clostridium difficile_
Subject: psychology
Question: Explain the process by which a child learns to walk. What existing gross motor skills are needed?
Subject: economics
Question: Can you think of any examples offreegoods, that is, goods or services that are not scarce?
Subject: biology
Question: Which of the following is an antimalarial drug that is thought to increase ROS levels in target cells?    A. artemisinin   B. amphotericin b   C. praziquantel   D. pleconaril
Subject: physics
Question: Passenger A sits inside a moving train and throws a ball vertically upward. How would the motion of the ball be described by a fellow train passenger B and an observer C who is standing on the platform outside the train?
Subject: psychology
Question: What is a property of formal operational thought?
Subject: mathematics
Question: Compute22P5.
Subject: biology
Question: Mendel performed hybridizations by transferring pollen from the _______ of the male plant to the female ova.
Subject: mathematics
Question: 3x + 19 = -47
Subject: history
Question: Why was the German use of theunterseebootconsidered to defy international law? because other countries did not have similar technologybecause they refused to warn their targets before firingbecause they constituted cruel and unusual methodsbecause no international consensus existed to employ submarine technology
Subject: computer_science
Question: Explain how React and Node are used to create a Todo web application.
Subject: mathematics
Question: r=43−2cosθr=43−2cosθ
Subject: astronomy
Question: Describe some possible futures for the universe that scientists have come up with. What property of the universe determines which of these possibilities is the correct one?
Subject: physics
Question: In an MRI scan, a higher magnetic field requires higher frequency radio waves to resonate with the nuclear type whose density and location is being imaged. What effect does going to a larger magnetic field have on the most efficient antenna to broadcast those radio waves? Does it favor a smaller or larger antenna?
Subject: physics
Question: Logs sometimes float vertically in a lake because one end has become water- logged and denser than the other. What is the average density of a uniform- diameter log that floats with 20.0% of its length above water?
Subject: physics
Question: Find the gauge and absolute pressures in the balloon and peanut jar shown in [Figure 11.14](11-6-gauge-pressure-absolute-pressure-and-pressure-measurement) , assuming the manometer connected to the balloon uses water whereas the manometer connected to the jar contains mercury. Express in units of centimeters of water for the balloon and millimeters of mercury for the jar, taking {h = 0}\text{.}\text{0500 m} for each.
Subject: astronomy
Question: Which of the gas giants has the largest icy/rocky core compared to its overall size?
Subject: biology
Question: The ________ lobe contains the visual cortex.
Subject: biology
Question: To what does the TCR of a helper T cell bind?    A. antigens presented with MHC I molecules   B. antigens presented with MHC II molecules   C. free antigen in a soluble form   D. haptens only
Subject: physics
Question: Is the photoelectric effect a direct consequence of the wave character of EM radiation or of the particle character of EM radiation? Explain briefly.
Subject: psychology
Question: Life satisfaction is influenced by both short-term factors, such as enjoyable activities, and long-term factors, such as financial stability and social support. Reflect on these influences and discuss how life satisfaction might change during middle adulthood. What role do factors like career stability, family relationships, and health play in contributing to or detracting from overall satisfaction during this stage of life.
Subject: physics
Question: What are two equivalent terms for a lens that always causes light rays to bend away from the principal axis?
Subject: mathematics
Question: \- \ \frac{3}{8}
Subject: physics
Question: \alpha decay of {}^{\text{210}}\text{Po} , the isotope of polonium in the decay series of {}^{\text{238}}\text{U} that was discovered by the Curies. A favorite isotope in physics labs, since it has a short half-life and decays to a stable nuclide.
Subject: biology
Question: Which of the following is thought to be the most closely related to the common animal ancestor?
Subject: mathematics
Question: 7x + 10 - 6x + 3 = 5
Subject: physics
Question: How does the charge of an individual quark determine hadron structure?
Subject: economics
Question: What would happen if contractionary fiscal policy were implemented during an economic boom but, due to lag, it did not take effect until the economy slipped into recession?
Subject: biology
Question: Dolphins and fish have similar body shapes. Is this feature more likely a homologous or analogous trait?
Subject: mathematics
Question: Write the set of all letters in the word Mississippi and label it with a capitalM.
Subject: astronomy
Question: A star has a temperature of 10,000 K and a luminosity of 10–2LSun. What kind of star is it?
Subject: biology
Question: The protein complex responsible for removing intron-encoded RNA sequences from primary transcripts in eukaryotes is called the ________.
Subject: biology
Question: A shoulder separation results from injury to the ________.
Subject: biology
Question: Which of the following components isnotused by both plants and cyanobacteria to carry out photosynthesis?
Subject: nursing
Question: The nurse is caring for a client with dysfunction of the upper esophageal sphincter. Which sign or symptom would the nurse expect the client to have?
Subject: mathematics
Question: Janet gets paid $24 per hour. She heard that this is \frac{3}{4} of what Adam is paid. How much is Adam paid per hour?
Subject: business
Question: Fair use allows for the copying and use of copyrighted material for all EXCEPT which specific purpose?    A. Criticism and comment.   B. News reporting.   C. Teaching or research.   D. Political organizing.
Subject: mathematics
Question: Apply the 50-30-20 budget philosophy to a monthly income of $3,920.
Subject: business
Question: Design a sustainability campaign. Select a product or service that is not currently sustainable and redesign it to be sustainable. Consider how you would change the form, function, packaging, distribution, and/or target audience.
Subject: biology
Question: The rogue form of the prion protein is called ________.
Subject: physics
Question: Students in a physics lab are asked to find the length of an air column in a tube closed at one end that has a fundamental frequency of 256 Hz. They hold the tube vertically and fill it with water to the top, then lower the water while a 256-Hz tuning fork is rung and listen for the first resonance. (a) What is the air temperature if the resonance occurs for a length of 0.336 m? (b) At what length will they observe the second resonance (first overtone)?
Subject: mathematics
Question: Predict when the population will hit 12,000.
Subject: biology
Question: A soup container was forgotten in the refrigerator and shows contamination. The contaminants are probably which of the following?    A. thermophiles   B. acidophiles   C. mesophiles   D. psychrotrophs
Subject: mathematics
Question: Find the expected value from the expected value table. xP(x)x*P(x)20.12(0.1) = 0.240.34(0.3) = 1.260.46(0.4) = 2.480.28(0.2) = 1.6Table4.23
Subject: chemistry
Question: Using the Bohr model, determine the energy in joules of the photon produced when an electron in a Li 2+ ion moves from the orbit with _n_ = 2 to the orbit with _n_ = 1.
Subject: mathematics
Question: Enter expected values inTable 11.32. Round to two decimal places. Calculate the following values:
Subject: nursing
Question: The nurse is caring for a client who has sustained an ischemic stroke. The nurse recognizes that the client is experiencing deficits in which part of the nervous system?
Subject: biology
Question: Which is found only in the cervical region of the vertebral column?
Subject: psychology
Question: ________ is the field of study that focuses on genes and their expression.
Subject: business
Question: LO11.1What is the screening decision?
Subject: physics
Question: Are the direction and magnitude of the Coulomb force unique at a given point in space? What about the electric field?
Subject: physics
Question: How would you determine whether the charge on a particular rod is positive or negative?
Subject: computer_science
Question: The TechWorks prosthetic CPU has two cores, and the control software is written in C. Currently the code does not use any parallel programming. One of the programmers on the team, Bob, suggests that the software should use threads so that the function that moves the prosthetic, and the function that applies software updates, can run at the same time. What are the advantages and disadvantages of this approach?
Subject: physics
Question: What is the observed frequency when the observer is moving away from the source at125m/s? The source frequency is237Hzand the speed of sound is325m/s.
Subject: chemistry
Question: Explain why an egg cooks more slowly in boiling water in Denver than in New York City. (Hint: Consider the effect of temperature on reaction rate and the effect of pressure on boiling point.)
Subject: physics
Question: Can a goalkeeper at her/ his goal kick a soccer ball into the opponent’s goal without the ball touching the ground? The distance will be about 95 m. A goalkeeper can give the ball a speed of 30 m/s.
Subject: mathematics
Question: FindP(musician is a woman).
Subject: physics
Question: Two long, straight wires are parallel and 10 cm apart. One carries a current of 2.0 A, the other a current of 5.0 A. (a) If the two currents flow in opposite directions, what is the magnitude and direction of the force per unit length of one wire on the other? (b) What is the magnitude and direction of the force per unit length if the currents flow in the same direction?
Subject: business
Question: What does the term “prior art” refer to?    A. Any previous private discussions of an invention or its components.   B. Any previous patent, publication, or public use of an invention.   C. Any previous speculation about an invention.   D. None of the above.
Subject: history
Question: In what types of unethical and illegal activities did the White House plumbers and the “dirty tricks” squad engage?
Subject: physics
Question: List all the possible values of _s_ and m_{s} for an electron. Are there particles for which these values are different?
Subject: sociology
Question: What are some of the intended positive aspects of bureaucracies?
Subject: economics
Question: Suppose that a 5% increase in the minimum wage causes a 5% reduction in employment. How would this affect employers and how would it affect workers? In your opinion, would this be a good policy?
Subject: chemistry
Question: Basic solutions of Na4XeO6are powerful oxidants. What mass of Mn(NO3)2•6H2O reacts with 125.0 mL of a 0.1717Mbasic solution of Na4XeO6that contains an excess of sodium hydroxide if the products include Xe and solution of sodium permanganate?
Subject: biology
Question: What special features are evident in sperm cells but not in somatic cells, and how do these specializations function?
Subject: nursing
Question: A nurse is assessing a client who has been prescribed a respiratory anticholinergic medication. What medical history would be a concern for this nurse when administering the anticholinergic medication?
Subject: political_science
Question: Defineinstitutional racism.
Subject: mathematics
Question: The sum of -6 and m is 25.
Subject: chemistry
Question: What is the expected electrical conductivity of the following solutions? (a) NaOH(aq) (b) HCl(aq) (c) C6H12O6(aq) (glucose) (d) NH3(aq)
Subject: political_science
Question: Which of the following is not a challenge facing legislatures today?
Subject: mathematics
Question: -8(-7a - 12)
Subject: physics
Question: (a) The print in many books averages 3.50 mm in height. How high is the image of the print on the retina when the book is held 30.0 cm from the eye? (b) Compare the size of the print to the sizes of rods and cones in the fovea and discuss the possible details observable in the letters. (The eye-brain system can perform better because of interconnections and higher order image processing.)
Subject: political_science
Question: What societal ills are social welfare programs designed to address?
Subject: biology
Question: Bacteria isolated from the bottom of the ocean need high atmospheric pressures to survive. They are ________.
Subject: physics
Question: Integrated Concepts A 76.0-kg person suffering from hypothermia comes indoors and shivers vigorously. How long does it take the heat transfer to increase the person’s body temperature by 2\text{.}\text{00ºC} if all other forms of heat transfer are balanced?
Subject: physics
Question: A 20.0-m-tall hollow aluminum flagpole is equivalent in strength to a solid cylinder 4.00 cm in diameter. A strong wind bends the pole as much as a horizontal 900.0-N force on the top would do. How far to the side does the top of the pole flex?
Subject: biology
Question: In what way does the overall magnitude of a stimulus affect the just-noticeable difference in the perception of that stimulus?
Subject: physics
Question: Protons in an atomic nucleus are typically 10^{-15}\ \text{m} apart. What is the electric force of repulsion between nuclear protons?
Subject: physics
Question: If you want a characteristic _RL_ time constant of 1.00 s, and you have a \text{500 Ω} resistor, what value of self-inductance is needed?
Subject: physics
Question: Should an atomic bomb really be called _nuclear_ bomb?
Subject: physics
Question: What is the far point of a person whose eyes have a relaxed power of 50.5 D?
Subject: nursing
Question: The nurse is teaching a client receiving a tricyclic antidepressant. Which of the following symptoms related to its anticholinergic effects could the client experience?
Subject: history
Question: What were the core differences in the methods and agendas of the Knights of Labor and the American Federation of Labor?
Subject: mathematics
Question: x¯x¯= _____
Subject: business
Question: All of the following are elements of negligence except:    A. A reasonable person.   B. A duty by the defendant to either act or refrain from acting.   C. A breach of a duty owed by defendant.   D. Measurable harm.
Subject: mathematics
Question: \frac{5}{3\sqrt{5}}
Subject: nursing
Question: A nurse is educating a client who has been taking methylprednisolone for an extended period. The nurse emphasizes the importance of gradually tapering the medication instead of abruptly stopping it. Which risk is the nurse concerned about?
Subject: psychology
Question: Repeated high frequency stimulation can lead to ________ , a long-term increase in synaptic strength.
Subject: business
Question: Why are action plans useful in the development or improvement of a venture?
Subject: physics
Question: True or False—The vector for a negative acceleration points in the opposite direction when compared to the vector for a positive acceleration.
Subject: business
Question: What is the difference between an immigrant entrepreneur and a minority entrepreneur? What are the similarities?
Subject: physics
Question: Assuming the + _x_ -axis is horizontal to the right for the vectors in the previous figure, find the following vector products: (a) \mathbf{\overset{\rightarrow}{A}}\ \times \ \mathbf{\overset{\rightarrow}{C}} , (b) \mathbf{\overset{\rightarrow}{A}}\ \times \ \mathbf{\overset{\rightarrow}{F}} , (c) \mathbf{\overset{\rightarrow}{D}}\ \times \ \mathbf{\overset{\rightarrow}{C}} , (d) \mathbf{\overset{\rightarrow}{A}}\ \times \ (\mathbf{\overset{\rightarrow}{F}} + 2\mathbf{\overset{\rightarrow}{C}}) , (e) \mathbf{\hat{i}}\ \times \ \mathbf{\overset{\rightarrow}{B}} , (f) \mathbf{\hat{j}}\ \times \ \mathbf{\overset{\rightarrow}{B}} , (g) (3\mathbf{\hat{i}} - \mathbf{\hat{j}})\ \times \ \mathbf{\overset{\rightarrow}{B}} , and (h) \mathbf{\hat{B}}\ \times \ \mathbf{\overset{\rightarrow}{B}} .
Subject: physics
Question: In which of the following situations is the Doppler effect absent?
Subject: business
Question: LO6.2Sunrise Flowers sells flowers to a customer on credit for $130 on October 18, with a cost of sale to Sunrise of $50. What entry to recognize this sale is required if Sunrise Flowers uses aperiodicinventory system?
Subject: physics
Question: Find the net capacitance of the combination of series and parallel capacitors shown below.
Subject: mathematics
Question: In 2012,\text{13.5\%} of the United States population was age 65 or over. (Source: www.census.gov)
Subject: physics
Question: The power versus time for a point on a string \left( {\mu = 0.05\ \text{kg/m}} \right) in which a sinusoidal traveling wave is induced. The wave is modeled with the wave equation y\left( {x,t} \right) = A\ \text{sin}\left( {20.93\ \text{m}^{-1}x - \omega t} \right) . What is the frequency and amplitude of the wave?
Subject: physics
Question: (a) Calculate \text{BE}/A for {}^{\text{12}}\text{C} . Stable and relatively tightly bound, this nuclide is most of natural carbon. (b) Calculate \text{BE}/A for {}^{\text{14}}\text{C} . Is the difference in \text{BE}/A between {}^{\text{12}}\text{C} and {}^{\text{14}}\text{C} significant? One is stable and common, and the other is unstable and rare.
Subject: mathematics
Question: y = 16x^{2} - 8x + 1
Subject: physics
Question: The cannon on a battleship can fire a shell a maximum distance of 32.0 km. (a) Calculate the initial velocity of the shell. (b) What maximum height does it reach? (At its highest, the shell is above 60% of the atmosphere—but air resistance is not really negligible as assumed to make this problem easier.) (c) The ocean is not flat, because the Earth is curved. Assume that the radius of the Earth is 6\text{.}{\text{37} \times \text{10}^{3}}\ \text{km} . How many meters lower will its surface be 32.0 km from the ship along a horizontal line parallel to the surface at the ship? Does your answer imply that error introduced by the assumption of a flat Earth in projectile motion is significant here?
Subject: biology
Question: The ____________ theory states that disease may originate from proximity to decomposing matter and is not due to person-to-person contact.
Subject: mathematics
Question: Construct a 99% confidence interval for the population mean hours spent watching television per month. (a) State the confidence interval, (b) sketch the graph, and (c) calculate the error bound.
Subject: mathematics
Question: When making the 5-hour drive home from visiting her parents, Lisa ran into bad weather. She was able to drive 176 miles while the weather was good, but then driving 10 mph slower, went 81 miles in the bad weather. How fast did she drive when the weather was bad?
Subject: chemistry
Question: Assuming ideal solution behavior, what is the boiling point of a solution of 115.0 g of nonvolatile sucrose, C 12 H 22 O 11 , in 350.0 g of water? (a) Outline the steps necessary to answer the question (b) Answer the question
Subject: mathematics
Question: bedroom floor12 km212 m212 cm212 mm2
Subject: business
Question: Which of the following is the definition of inequitable conduct?    A. Deceiving or misleading the patent office to grant a patent.   B. Deceiving or misleading a jury during opening arguments.   C. Deceiving or misleading the opposing party during the discovery phase.
Subject: astronomy
Question: How does a white dwarf differ from a neutron star? How does each form? What keeps each from collapsing under its own weight?
Subject: biology
Question: Which of the following is the standard resource for identifying bacteria?    A. _Systema Naturae_   B. Bergey’s _Manual of Determinative Bacteriology_   C. Woese and Fox’s phylogenetic tree   D. Haeckel’s _General Morphology of Organisms_
Subject: physics
Question: If you place a small needle between the north poles of two bar magnets, will the needle become magnetized?
Subject: chemistry
Question: What are the types of radiation emitted by the nuclei of radioactive elements?
Subject: economics
Question: How do gains in labor productivity lead to gains in GDP per capita?
Subject: mathematics
Question: x^{2} - xy + y^{2} - 6 = 0
Subject: sociology
Question: When it comes to media and technology, a functionalist would focus on:    A. the symbols created and reproduced by the media   B. the association of technology and technological skill with men   C. the way that various forms of media socialize users    D. the digital divide between the technological haves and have-nots
Subject: political_science
Question: What does a communitarian system emphasize with regard to civil liberties?
Subject: business
Question: What does the California Transparency in Supply Chains Act require of businesses that operate in California?
Subject: mathematics
Question: For vector fieldF(x,y)=P(x,y)i+Q(x,y)j,F(x,y)=P(x,y)i+Q(x,y)j,ifPy(x,y)=Qx(x,y)Py(x,y)=Qx(x,y)in open regionD,D,then∫∂DPdx+Qdy=0.∫∂DPdx+Qdy=0.
Subject: psychology
Question: ________ proposed the hierarchy of needs. William JamesDavid McClellandAbraham MaslowAlbert Bandura
Subject: economics
Question: If immigration is reduced, what is the impact on the wage for low-skilled labor? Explain.
Subject: physics
Question: Given the displacement vector \mathbf{\overset{\rightarrow}{D}} = (3\mathbf{\hat{i}} - 4\mathbf{\hat{j}})\text{m,} find the displacement vector \mathbf{\overset{\rightarrow}{R}} so that \mathbf{\overset{\rightarrow}{D}} + \mathbf{\overset{\rightarrow}{R}} = -4D\mathbf{\hat{j}} .
Subject: chemistry
Question: The following equation represents a reversible decomposition:CaCO3(s)⇌CaO(s)+CO2(g)CaCO3(s)⇌CaO(s)+CO2(g) Under what conditions will decomposition in a closed container proceed to completion so that no CaCO3remains?
Subject: sociology
Question: Sociological studies test relationships in which change in one ________ causes change in another.
Subject: mathematics
Question: 2p^{2} - 11p = 40
Subject: economics
Question: Classify the following pollution-control policies as command-and-control or market incentive based.    A. A state emissions tax on the quantity of carbon emitted by each firm.   B. The federal government requires domestic auto companies to improve car emissions by 2020.   C. The EPA sets national standards for water quality.   D. A city sells permits to firms that allow them to emit a specified quantity of pollution.   E. The federal government pays fishermen to preserve salmon.
Subject: biology
Question: The end result of the RAAS is to ________.
Subject: economics
Question: If a government gains from unexpected inflation when it borrows, why would it choose to offer indexed bonds?
Subject: chemistry
Question: Explain why the plot ofPVfor CO2differs from that of an ideal gas.
Subject: mathematics
Question: Draw the graph fromExercise 7.39
Subject: physics
Question: When you focus a camera, you adjust the distance of the lens from the film. If the camera lens acts like a thin lens, why can it not be kept at a fixed distance from the film for both near and distant objects?
Subject: biology
Question: Which type of epithelial cell is found in the urinary bladder?
Subject: psychology
Question: Synapses are best visualized using ________.
Subject: chemistry
Question: Using the data in [Appendix G](g-standard-thermodynamic-properties-for- selected-substances) , calculate the standard enthalpy change for each of the following reactions: (a) \text{Si}(s) + 2\text{F}_{2}(g)\ \longrightarrow\ \text{SiF}_{4}(g) (b) 2\text{C}(s) + 2\text{H}_{2}(g) + \text{O}_{2}(g)\ \longrightarrow\ \text{CH}_{3}\text{CO}_{2}\text{H}(l) (c) {\text{CH}_{4}(g) + \text{N}_{2}(g)\ \longrightarrow\ \text{HCN}(g) + \text{NH}_{3}(g)}\text{;} (d) \text{CS}_{2}(g) + 3\text{Cl}_{2}(g)\ \longrightarrow\ \text{CCl}_{4}(g) + \text{S}_{2}\text{Cl}_{2}(g)
Subject: physics
Question: Fluid originally flows through a tube at a rate of 100\ \text{cm}^{3}\text{/s} . To illustrate the sensitivity of flow rate to various factors, calculate the new flow rate for the following changes with all other factors remaining the same as in the original conditions. (a) Pressure difference increases by a factor of 1.r. (b) A new fluid with 3.00 times greater viscosity is substituted. (c) The tube is replaced by one having 4.00 times the length. (d) Another tube is used with a radius 0.100 times the original. (e) Yet another tube is substituted with a radius 0.100 times the original and half the length, and the pressure difference is increased by a factor of 1.50.
Subject: physics
Question: What is meant when a physical law is said to be universal?
Subject: astronomy
Question: A student becomes so excited by the whole idea of black holes that he decides to jump into one. It has a mass 10 times the mass of our Sun. What is the trip like for him? What is it like for the rest of the class, watching from afar?
Subject: computer_science
Question: Why do you need to learn assembly programming?
Subject: mathematics
Question: \frac{6}{11}
Subject: psychology
Question: What is Medicare and what purpose does it serve? Are there any gaps in Medicare coverage?
Subject: physics
Question: What is the effective resistance of a car’s starter motor when 150 A flows through it as the car battery applies 11.0 V to the motor?
Subject: economics
Question: How might adverse selection make it difficult for an insurance market to operate?
Subject: physics
Question: Give an example of entrainment not mentioned in the text.
Subject: psychology
Question: Which is not a behavior that is mediated by the olfactory system?
Subject: chemistry
Question: How are protons and neutrons similar? How are they different?
Subject: history
Question: What was agreed to at the armistice talks between North and South Korea?
Subject: astronomy
Question: Why have we found so many objects in the Kuiper belt in the last two decades and not before then?
Subject: biology
Question: Without olfactory sensation to complement gustatory stimuli, food will taste bland unless it is seasoned with which substance?
Subject: physics
Question: A community is concerned about a plan to bring train service to their downtown from the town’s outskirts. The current sound intensity level, even though the rail yard is blocks away, is 70 dB downtown. The mayor assures the public that there will be a difference of only 30 dB in sound in the downtown area. Should the townspeople be concerned? Why?
Subject: political_science
Question: What strategies can presidents employ to win people over to their way of thinking?
Subject: chemistry
Question: Calculate the equilibrium concentration of Zn2+in a solution initially with 0.150MZn2+and 2.50MCN–.
Subject: chemistry
Question: Use the Nernst equation to explain the drop in voltage observed for some batteries as they discharge.
Subject: mathematics
Question: f(x) = \sqrt{x + 2},\mspace{9mu} g(x) = \frac{1}{x}
Subject: mathematics
Question: 2\;\sin\;\theta = - 1
Subject: physics
Question: Consider the circuit below. The battery has an emf of \varepsilon = 30.00\ \text{V} and an internal resistance of r = 1.00\ \text{Ω}. (a) Find the equivalent resistance of the circuit and the current out of the battery. (b) Find the current through each resistor. (c) Find the potential drop across each resistor. (d) Find the power dissipated by each resistor. (e) Find the total power supplied by the batteries.
Subject: business
Question: Briefly describe a major shortcoming of the zero growth DDM model.
Subject: chemistry
Question: A student solved the following problem and found the equilibrium concentrations to be [SO 2 ] = 0.590 _M_ , [O 2 ] = 0.0450 _M_ , and [SO 3 ] = 0.260 _M_ . How could this student check the work without reworking the problem? The problem was: For the following reaction at 600 °C: 2\text{SO}_{2}(g) + \text{O}_{2}(g)\rightleftharpoons 2\text{SO}_{3}(g)\mspace{90mu} K_{c} = 4.32
Subject: business
Question: [LO 5.3](5-3-explain-and-compute-equivalent-units-and-total-cost-of- production-in-an-initial-processing-stage) What are the four steps involved in determining the cost of inventory transferred from one department to the next and the cost of work in process inventory?
Subject: physics
Question: A block of mass 3 kg slides down an inclined plane at an angle of 45\text{°} with a massless tether attached to a pulley with mass 1 kg and radius 0.5 m at the top of the incline (see the following figure). The pulley can be approximated as a disk. The coefficient of kinetic friction on the plane is 0.D. What is the acceleration of the block?
Subject: computer_science
Question: a.What characteristics define a time series? b.Which of the following are examples of time series data?The vital statistics of a cancer patient taken right before a major surgeryThe monthly expenses of a small company recorded over a period of five yearsDaily temperature, rainfall, humidity, and wind speeds measured at a particular location over a few monthsStudent final grades in all sections of a course at a university
Subject: business
Question: Most firms today take advantage of multimodal transportation, especially those that source and distribute products internationally. List three reasons why multimodal transportation makes sense financially for a retailer like Amazon that operates in a time-sensitive marketplace.
Subject: biology
Question: The assertion that “life only comes from life” was stated by Louis Pasteur in regard to his experiments that definitively refuted the theory of ___________.
Subject: mathematics
Question: 95° Fahrenheit
Subject: nursing
Question: The nurse is assessing a client who has poor dentition. Which function of the gastrointestinal system will be affected most by this?
Subject: economics
Question: What shapes would you generally expect a total product curve and a marginal product curve to have?
Subject: business
Question: [LO 8.1](8-1-explain-how-and-why-a-standard-cost-is-developed) Why does a company use a standard costing system?    A. to identify variances from actual cost that assist them in maintaining profits   B. to identify nonperformers in the workplace   C. to identify what vendors are unreliable   D. to identify defective materials
Subject: biology
Question: Which of the following applies to hyaluronidase?    A. It acts as a spreading factor.   B. It promotes blood clotting.   C. It is an example of an adhesin.   D. It is produced by immune cells to target pathogens.
Subject: political_science
Question: Television news became a regular feature during ________ due to the public’s demand for ________ to explain current events.
Subject: business
Question: The following are bureaus of the Federal Trade Commission except:    A. Bureau of Unfair Trade Practices.   B. Bureau of Consumer Protection.   C. Bureau of Competition.   D. Bureau Economics.
Subject: biology
Question: Which of the following is not an extracellular matrix role of carbohydrates?
Subject: mathematics
Question: f(x) = x + \text{sin}^{2}(x) over \left\lbrack {0,\pi} \right\rbrack
Subject: philosophy
Question: What is Plato’s concept of beauty? Why does it make sense within the ancient Greek art world?
Subject: mathematics
Question: The American family has an average of two children. What is the random variable? Describe in words.
Subject: biology
Question: According to the sliding filament model, binding sites on actin open when ________.
Subject: economics
Question: What does it mean to say that a currency appreciates? Depreciates? Becomes stronger? Becomes weaker?
Subject: chemistry
Question: Calculate the molar mass of each of the following: (a) the anesthetic halothane, C 2 HBrClF 3 (b) the herbicide paraquat, C 12 H 14 N 2 Cl 2 (c) caffeine, C 8 H 10 N 4 O 2 (d) urea, CO(NH 2 ) 2 (e) a typical soap, C 17 H 35 CO 2 Na
Subject: economics
Question: What is the difference between the demand and the quantity demanded of a product, say milk? Explain in words and show the difference on a graph with a demand curve for milk.
Subject: psychology
Question: Arthur Jensen believed that ________.
Subject: biology
Question: The adrenal glands are attached superiorly to which organ?
Subject: chemistry
Question: Rank the compounds in each of the following groups in order of increasing acidity or basicity, as indicated, and explain the order you assign. (a) acidity: HCl, HBr, HI (b) basicity: H2O, OH−, H−, Cl− (c) basicity: Mg(OH)2, Si(OH)4, ClO3(OH) (Hint: Formula could also be written as HClO4.) (d) acidity: HF, H2O, NH3, CH4
Subject: mathematics
Question: Sketch a graph of the situation. Label the horizontal axis. Mark the hypothesized difference and the sample difference. Shade the area corresponding to thep-value.
Subject: chemistry
Question: The initial concentrations or pressures of reactants and products are given for each of the following systems. Calculate the reaction quotient and determine the direction in which each system will proceed to reach equilibrium. (a) 2\text{NH}_{3}(g)\rightleftharpoons\text{N}_{2}(g) + 3\text{H}_{2}(g)\mspace{90mu} K_{c} = 17; [NH 3 ] = 0.20 _M_ , [N 2 ] = 1.00 _M_ , [H 2 ] = 1.00 _M_ (b) 2\text{NH}_{3}(g)\rightleftharpoons\text{N}_{2}(g) + 3\text{H}_{2}(g)\mspace{90mu} K_{P} = 6.8\ \times \ 10^{4}; NH 3 = 3.0 atm, N 2 = 2.0 atm, H 2 = 1.0 atm (c) 2\text{SO}_{3}(g)\ \rightleftharpoons 2\text{SO}_{2}(g) + \text{O}_{2}(g)\mspace{90mu} K_{c} = 0.230; [SO 3 ] = 0.00 _M_ , [SO 2 ] = 1.00 _M_ , [O 2 ] = 1.00 _M_ (d) 2\text{SO}_{3}(g)\rightleftharpoons 2\text{SO}_{2}(g) + \text{O}_{2}(g)\mspace{90mu} K_{P} = 16.5; SO 3 = 1.00 atm, SO 2 = 1.00 atm, O 2 = 1.00 atm (e) 2\text{NO}(g) + \text{Cl}_{2}(g)\rightleftharpoons 2\text{NOCl}(g)\mspace{90mu} K_{c} = 4.6\ \times \ 10^{4}; [NO] = 1.00 _M_ , [Cl 2 ] = 1.00 _M_ , [NOCl] = 0 _M_ (f) \text{N}_{2}(g) + \text{O}_{2}(g)\rightleftharpoons 2\text{NO}(g)\mspace{90mu} K_{P} = 0.050; NO = 10.0 atm, N 2 = O 2 = 5 atm
Subject: mathematics
Question: A pair of glasses is dropped off a bridge 640 feet above a river. The polynomial -16t^{2} + 640 gives the height of the glasses t seconds after they were dropped. Find the height of the glasses when t = 6.
Subject: mathematics
Question: ⓐ \sqrt[5]{-32}   ⓑ \sqrt[8]{-1}
Subject: biology
Question: Which step in vitamin D production does the kidney perform?
Subject: physics
Question: Two plastic spheres with uniform charge repel each other with a force of 10 N . If you remove the charge from one sphere, what will be the force between the spheres?
Subject: philosophy
Question: Why is the concept of “benefit” important in Mohism?
Subject: psychology
Question: The idea that people’s ideas about themselves should match their actions is called ________.
Subject: biology
Question: Which part of the light-independent reactions would be affected if a cell could not produce the enzyme RuBisCO?
Subject: mathematics
Question: AssumeH0:μ≤ 6 andHa:μ> 6. Is this a left-tailed, right-tailed, or two-tailed test?
Subject: biology
Question: The term microbiota refers to which of the following?    A. all microorganisms of the same species   B. all of the microorganisms involved in a symbiotic relationship   C. all microorganisms in a certain region of the human body   D. all microorganisms in a certain geographic region
Subject: history
Question: Briefly explain Roland Marchand’s argument in theParable of the Democracy of Goods.
Subject: business
Question: All of the following are methods to enforce an arbitrator’s decision except:
Subject: psychology
Question: The Cannon-Bard position was strengthened by their observation that cats display species typical emotional reactions to threatening stimuli, even when:
Subject: chemistry
Question: Among the solubility rules previously discussed is the statement: All chlorides are soluble except Hg2Cl2, AgCl, PbCl2, and CuCl. (a) Write the expression for the equilibrium constant for the reaction represented by the equationAgCl(s)⇌Ag+(aq)+Cl−(aq).AgCl(s)⇌Ag+(aq)+Cl−(aq).IsKc> 1, < 1, or ≈ 1? Explain your answer. (b) Write the expression for the equilibrium constant for the reaction represented by the equationPb2+(aq)+2Cl−(aq)⇌PbCl2(s).Pb2+(aq)+2Cl−(aq)⇌PbCl2(s).IsKc> 1, < 1, or ≈ 1? Explain your answer.
Subject: physics
Question: If both mass and velocity of an object are constant, what can you tell about its impulse?
Subject: business
Question: [LO 2.1](2-1-describe-the-income-statement-statement-of-owners-equity-balance- sheet-and-statement-of-cash-flows-and-how-they-interrelate) Assume a company has a $350 credit (not cash) sale. How would the transaction appear if the business uses _accrual_ accounting?    A. $350 would show up on the balance sheet as a sale.   B. $350 would show up on the income statement as a sale.   C. $350 would show up on the statement of cash flows as a cash outflow.   D. The transaction would not be reported because the cash was not exchanged.
Subject: political_science
Question: Does gerrymandering lead to increased polarization?