source string | id string | question string | options list | answer string | reasoning string |
|---|---|---|---|---|---|
OpenBookQA | OpenBookQA-1501 | paleontology, fossils, desert
Title: Why are many fossils found in deserts? Why are deserts famous for fossils? Is it a coincidence? Some examples:
Giant Catfish Fossil Found in Egyptian Desert
Chile's stunning fossil whale graveyard explained
Giant Dinosaur Fossil Found in Sahara Desert I would contend that the fact ... | [
"buildings",
"rock particles",
"trees",
"cement"
] | B | some lizards live in desert habitats |
OpenBookQA | OpenBookQA-1502 | Since we have $21$ terms taking $20$ possible values, there are some $0 \le i < j \le 20$ such that $S_i = S_j$. It follows that the total number of hours of study between days $i+1$ and $j$ (inclusive) is a multiple of $20$.
If it is not exactly equal to $20$ hours, then it must be at least $40$ hours. However, this ... | [
"high tide",
"4 million seconds",
"solar cycle",
"week"
] | C | one day is equal to 24 hours |
OpenBookQA | OpenBookQA-1503 | geology, geography, satellite-oddities
Title: Round structure in southern United States Assuming here might be someone who knows something about this, I wanted to ask what is behind this round structure I have spotted today on Google Earth:
There seems to be a large (~200 km), nearly perfect half-circle covering the ... | [
"growing it in transplanting it",
"having molten rock cool above sea level",
"creating a dam around a body of water",
"cooling burned plants with water"
] | B | new land can be formed by volcanoes erupting by lava cooling |
OpenBookQA | OpenBookQA-1504 | the-sun, light, rotation, planetary-atmosphere
Title: Why is twilight longer in summer than winter and shortest at the equinox I recently decided to set my alarm clock to wake me up when it is "dark" out. In the end, I decided to set my clock to the earliest time that nautical sunrise is in my state (Illinois) and st... | [
"just over a year",
"around thirteen weeks or so",
"when G.R.R. Martin says it's here",
"when the groundhog sees its shadow"
] | B | a new season occurs once per three months |
OpenBookQA | OpenBookQA-1505 | evolution, species
Title: Reasons why living fossils exist?
A living fossil is a living species (or clade) that
appears to be similar to another species otherwise known only from fossils,
typically with no close living relatives.
A living fossil is considered as a successful organism, which has made its way thro... | [
"cry",
"respirate",
"do magic",
"walk a rope"
] | B | all animals breathe |
OpenBookQA | OpenBookQA-1506 | species-identification, botany, ecology
Title: Algae or Lichen identification. Coastal BC, Canada I have tried all books and internet resources I know of, but I still have no idea what this might be — a lichen or something else.
At first glimpse, I thought it was something man-made and unnatural, but then I looked clo... | [
"white clouds in the sky",
"a small hidden puddle",
"an old tall building",
"a field of grass"
] | B | algae is found in bodies of water |
OpenBookQA | OpenBookQA-1507 | bacteriology
Title: How quickly is antibiotic resistance lost? I would imagine the bacterial genome is highly conserved and limited in its space, but maybe I am wrong.
If you were to take a strain of antibiotic resistant bacteria and kept them isolated, but fed well and so forth, how long would it take for them to los... | [
"you cut off your finger nails",
"you eat pepperoni pizza",
"you brush your teeth",
"you blow your nose"
] | A | if a habitat is removed then that habitat is destroyed |
OpenBookQA | OpenBookQA-1508 | power-engineering
Title: Why are hydropower plants always wheel-shaped and not flat? Question:
Why are there no flat power generators like in the picture below, that work on the surface of shallow, but steadily flowing rivers ? (As a floating micropower plant.)
The picture shows a conveyer belt with vanes/blades(?) ... | [
"a breeze is floating",
"a child is crying",
"a dog is barking",
"clouds are very thin"
] | A | wind is used for producing electricity |
OpenBookQA | OpenBookQA-1509 | geomorphology
Title: What causes these mound-like ground formations? Whilst riding on Mam Tor in Castleton, England I came across this scene (not my photo) and I would like to know what causes the formations which I have ringed in red. They look like piles of earth have been deposited a long time ago, but clearly that... | [
"paper",
"gales",
"wood",
"money"
] | B | wind causes erosion |
OpenBookQA | OpenBookQA-1510 | optics, atmospheric-science
Title: Why do mountains disappear into the distance? Traveling south on CA 99 we noticed that atmospheric conditions were exceptionally clear and played a little game attempting to determine how far away we could identify Shasta. As we got further and further away it got smaller, greyer, an... | [
"freezing",
"evaporation",
"condensation",
"precipitation"
] | B | a phase change is when matter changes from one state into another state |
OpenBookQA | OpenBookQA-1511 | acoustics, vibrations
the solid itself, the air around it too.So the vibrations from one tong of the struck tuning fork travel to the other part via its bulk and set it in motion.
This displacement wave which is set off in the material is the sound that travels through it. This sound reflects off of the object's bound... | [
"a brick",
"nitrogen and oxygen",
"the ground",
"a mountain"
] | B | sound can travel through air |
OpenBookQA | OpenBookQA-1512 | cellular-respiration
Title: Do cold blooded animals generate any heat? In explaining energy and work to an 8 year-old I said that all conversion of energy generates heat as a by-product. For example, cars generate heat in their engines and running generates heat in our bodies. Then the 8 year-old said, except for co... | [
"starve",
"eat more",
"go out",
"diet"
] | B | fat is used to keep animals warm |
OpenBookQA | OpenBookQA-1513 | machine-learning, classification, decision-trees, information-theory
Weather and Wind both produce only one incorrect label hence have the same accuracy of 16/17. However, given this data, we would assume that weak winds (75% YES) are more predictive for a positive outcome than sunny weather (50% YES). That is, wind t... | [
"drought",
"waterfalls",
"sky water",
"fire"
] | C | if weather is stormy then there is a greater chance of rain |
OpenBookQA | OpenBookQA-1514 | proteins, food, digestive-system, amino-acids, digestion
Title: How are proteins reused in the body? Part of what we eat are proteins,
and our body is in part build of proteins.
Are the proteins of the body build based on proteins in food at all?
Are proteins in food directly reused in the body,
or are proteins first ... | [
"the ticker",
"the spleen",
"the kidney",
"the liver"
] | A | the heart is mostly made of muscle |
OpenBookQA | OpenBookQA-1515 | c++, game-of-life
void change_state(int, int /* coordinates */, Cell);
bool alive(int, int /* coordinates */) const;
int count_alive_neighbours(int, int /* coordinates */) const;
public:
Species(const grid&);
Species(const Species<size>&);
Species<size>& operator=(const Species<size>&);
voi... | [
"noxious foods for illness",
"energetic mutation of limbs",
"a source of happiness",
"a source of nutriment"
] | D | living things all require energy for survival |
OpenBookQA | OpenBookQA-1516 | hvac, heat-exchanger, refrigeration
My limited understanding of heat exchangers is that they operate at a colder temperature that the set point of what they are cooling.
I think that a conventional air cooler would have constant problems with ice forming on the heat exchanger, since even a few degrees colder than the ... | [
"Put on a swimming suit",
"set fire to some snow",
"run a cool bath",
"set fire to some natural gas"
] | D | natural gas is a source of heat by burning |
OpenBookQA | OpenBookQA-1517 | homework-and-exercises, fluid-statics
Now picture replacing the red mercury with $13.6\,\rm cm$ of water, and the silver mercury levels stay the same.
The following is multiple choice question (with options) to answer.
Water is a recyclable | [
"commodity",
"lubricant",
"revenue",
"treasure"
] | A | water is a renewable resource |
OpenBookQA | OpenBookQA-1518 | phase
More generically, if one was to apply enough pressure to a gas to make it a solid at room temperature and then remove the pressure, would it stay in the solid form? Instantly? Just like if you go outdoors when the temperature is below zero (centigrade) you freeze instantly? Are you from a location where temperat... | [
"a dream",
"ideas",
"cold",
"fresh baked poptart"
] | D | if a hot substance is touches a cold object then that substance will likely cool |
OpenBookQA | OpenBookQA-1519 | java, random
case 2:
return " with little to no vegitation, imports are what this town lives on.";
case 3:
return " and is full of fertile land, the farmers here are prosperous.";
case 4:
return " under the protection of large mountains and rought terrain; lining the horizon.";
case... | [
"make some more money",
"plant a wet rope",
"plant a blue spruce",
"sing to their flowers"
] | C | planting trees has a positive impact on an ecosystem |
OpenBookQA | OpenBookQA-1520 | # Conditional Probability of rainfall
1. Apr 26, 2012
### TranscendArcu
1. The problem statement, all variables and given/known data
3. The attempt at a solution
a) P(Pickwick has no umbrella | it rains) = $\frac{\frac{1}{3}\frac{1}{3}}{\frac{1}{2}} = \frac{2}{9}$, which is the answer according to my answer key.
b... | [
"be sunny",
"sprinkle",
"be humid",
"be windy"
] | B | precipitation is when water falls from the sky |
OpenBookQA | OpenBookQA-1521 | the-moon, newtonian-gravity
The resultant force looks like this:
Note that the tidal force is away from the center of the Earth when the Moon is directly overhead or directly underfoot, toward the center of the Earth when the Moon is on the horizon, and horizontal when the Moon is halfway between directly overhead/un... | [
"sun",
"uranus",
"mars",
"our home planet"
] | D | gravity causes orbits |
OpenBookQA | OpenBookQA-1522 | agriculture
Title: What does "permanent field" mean in agriculture? I am reading a book that in a paragraph talks about the agricultural methods used in prehistoric Finland.
The further north and east, the more extensive the amount of
burn-beat cultivation, which was a far from primitive form of
agriculture. The yiel... | [
"plants",
"loans",
"loam",
"water"
] | C | crop rotation renews soil |
OpenBookQA | OpenBookQA-1523 | thermodynamics, evaporation, gas, liquid-state
On the water surface, knowing the temperature, we can estimate the vapor pressure and vapor mixture fraction. Then there will be an diffusion process for the water vapor to move out and for the ambient air to move in. Because the water surface doesn't allow the air to fur... | [
"electrify",
"warm up",
"deliquesce",
"smell"
] | C | water vapor cooling causes that water vapor to condense |
OpenBookQA | OpenBookQA-1524 | human-biology, cancer, medicine
Title: Why are only few cigarette smokers prone to cancer? It's tacit that only a few populace of smokers get cancer. What spares the others from it or what specifically cause cancer in those populace? See this Washington Post Article Cigarette smokers are most certainly prone to cancer... | [
"hearing loss",
"sleep",
"intensity of cough",
"hunger"
] | C | smoking causes direct damage to the lungs |
OpenBookQA | OpenBookQA-1525 | homework-and-exercises, collision
I know that some energy is lost to air resistance and to friction in the bearings and tyres,
Even this just means the energy gets turned into heat somewhere else instead of heat in the brakes.
Earth must have some kinetic energy from the collision no?
Let's say it's a big car, weig... | [
"a violent disturbance of the atmosphere with high winds",
"ideas in print media",
"a large jet engine",
"a gas guzzling automobile"
] | A | when a hurricane moves over land , that hurricane will decrease in strength |
OpenBookQA | OpenBookQA-1526 | thermodynamics, visible-light, lenses
I forgot to mention that you can't heat the sample beyond about $5500\,K$ (which is the temperature of a black body that best fits the spectrum we receive at sea level). Of course, you need to know what you're doing to get anywhere close to this temperature.
The following is mult... | [
"there is more sunlight",
"there is more weight on them",
"there is more salt",
"there is more booze"
] | B | as depth increases , pressure will increase |
OpenBookQA | OpenBookQA-1527 | meteorology, climate-change, gas, pollution
If you are interested in Greenhouse Gases (e.g. methane, carbon dioxide, CFCs, nitrous oxide), the EPA has a separate site for those emissions since they are not part of the same regulatory framework http://www.epa.gov/climatechange/ghgemissions/ . Greenhouse gases typical... | [
"garbage trucks",
"trains",
"mail trucks",
"motorcycles"
] | A | landfills have a negative impact on the environment |
OpenBookQA | OpenBookQA-1528 | radiation
You see similar things happening here. The metal rod at the top of the lamp acts as a capacitive ground - given the very high voltage, a tiny charge will flow from the tip of the filament to the rod. There is a small amount of gas in the tube which is ionized and gives rise to the light you see. The electron... | [
"flower patterns",
"varied hues",
"varied light scents",
"sizes of elephants"
] | B | refraction is when light bends |
OpenBookQA | OpenBookQA-1529 | zoology
Title: Can my dog really understand me? Are dogs capable to understands human language ( for example after order sit it sit because he know that word) Or can sence our order by body language and intonation if so why this type of communication developed only at dogs? Some researchers say that dogs have the inte... | [
"the mom did it",
"it read how to",
"it went to school",
"it made a plan"
] | A | animals learn some behaviors from watching their parents |
OpenBookQA | OpenBookQA-1530 | java, beginner, object-oriented
protected void removeBook(Book book) {
if(!Library.isBookExist(book)) {
System.out.println("This book is not in the library");
return;
}
Library.getStore().remove(book);
System.out.println("Book: \"" + book.getName() + "\" for the ... | [
"has lost status as whole",
"lacks any real mass",
"is completely intact now",
"is a whole book"
] | A | tearing means changing a whole into pieces |
OpenBookQA | OpenBookQA-1531 | electrical-engineering, radiation
As with the cell phone radio, total emissions are very dependent on how busy the radio links are. These are battery powered systems, when not in use they are designed to be as low power as possible. Radio transmitters use a lot of power and so are kept powered down as much of the time... | [
"fire",
"video",
"water",
"sound"
] | D | electrical devices convert electricity into other forms of energy |
OpenBookQA | OpenBookQA-1532 | newtonian-mechanics, classical-mechanics, gravity, forces, astrophysics
Title: Universal gravity at small distance Could it be that there is simply a maximum gravitational force that two bodies of finite mass can exert on one another? This would occur at $r=0$, so maybe there is some really really really small $a$ in ... | [
"balloons",
"stars",
"sunshine",
"air"
] | C | gravitational force causes objects that have mass to be pulled down on a planet |
OpenBookQA | OpenBookQA-1533 | heat, earth, geophysics
Title: What if the earth's core goes cold? What effects would occur if the earth's core goes cold? Would the planet stay liveable after this happens? Once the core has solidifed it can no longer generate a magnetic field. There may be some frozen in field, but I would guess that the strength of... | [
"pass away",
"joy",
"increased energy",
"warmth"
] | A | if a living thing becomes too cold then that living thing will die |
OpenBookQA | OpenBookQA-1534 | • I am also stuck at this point. If the first rose is $Red$ then the Bride enters the Church and in that case the probability is $\frac{10}{20}$. But now come the cases when the first rose is $White$: $WRR$, $WWRRR$, $WRWRR$ and so on. No matter what, if the first rose is $White$, the last two roses must be $Red$. And ... | [
"lazy tourists",
"leaf miners",
"pollinators",
"caterpillars"
] | C | as the amount of fragrance of a flower increases , the number of pollinators it will attract increases |
OpenBookQA | OpenBookQA-1535 | zoology, species-identification, ornithology, behaviour
Title: What is this crow eating, and is it a common part of the corvid diet? Here's a picture (by Rob Curtis) of a crow carrying and eating the corpse of what looks a bit like a small hawk or falcon:
Other pictures clearly show the crow is eating the dead bird. ... | [
"lizard droppings",
"bearded dragons",
"cows",
"grass"
] | B | hawks eat lizards |
OpenBookQA | OpenBookQA-1536 | • Rotterdam apartments for students.
• Injury waiver form.
• Belgian Shepherd for sale Adelaide.
• Yugioh Card search.
• Vincenzo cast Instagram.
• The Grand Hotel entertainment.
• Biosphere 2 Discount Tickets.
• Disco Biscuits sessions.
• Is caviar good for Weight Loss.
• Frosted LED globe bulbs cool white.
• Human fa... | [
"inherited",
"absorbed",
"wanted",
"acquired"
] | D | the condition of the parts of an organism are acquired characteristics |
OpenBookQA | OpenBookQA-1537 | meteorology, atmosphere, geophysics, climate, geography
Finally, I have to note that I've interpreted "calmest" as the minimum mean wind speed. However, it would be sensible also to consider it as the place with the lowest maximum wind speed or some other metric, that would perhaps change the picture described above. ... | [
"iguanas",
"parka squirrels",
"tiger sharks",
"Burmese pythons"
] | B | the arctic environment is cold in temperature from being at a northern lattitude below 0 degrees celsius during most of the year |
OpenBookQA | OpenBookQA-1538 | zoology, species-identification, ornithology, behaviour
Title: What is this crow eating, and is it a common part of the corvid diet? Here's a picture (by Rob Curtis) of a crow carrying and eating the corpse of what looks a bit like a small hawk or falcon:
Other pictures clearly show the crow is eating the dead bird. ... | [
"beetle",
"horse",
"rabbit",
"buffalo"
] | A | predators eat prey |
OpenBookQA | OpenBookQA-1539 | heating-systems
Comparison between the two.
So you can see that, while you use more efficiently the primary energy with the steam boiler, if the electricity you get is from a renewable source then the ceramic might be more environmentally friendly.
Of course, I avoid going into the discussion about carbon emissions, o... | [
"it promoting plant growth",
"corn is too dangerous",
"corn is actually evil",
"corn grows under the water"
] | A | biofuel releases carbon dioxide into the atmosphere |
OpenBookQA | OpenBookQA-1540 | thermodynamics, phase-transition, states-of-matter
So in theory, you can have 100% ice that is at melting temperature. If you apply exactly the energy required for that amount of ice to transition to water, then you would have 100% water that is at the exact same temperature. If instead you only applied 50% of the ene... | [
"the moon",
"temp change",
"an iceberg",
"a reaction"
] | B | temperature changing can cause phase changes |
OpenBookQA | OpenBookQA-1541 | optics, geometric-optics, lenses
I found a hand magnifier whose focal length was approximately $5$ cm and set it up to be about $4$ cm from the lens so that the virtual image would be about 25 cm from the lens.
I then put another grid 25 cm from the lens as shown in the photograph.
What was pleasing was that the iPhon... | [
"more clear",
"smaller",
"spontaneous combust",
"physically grow"
] | A | as the size of an object appears larger , that object will be observed better |
OpenBookQA | OpenBookQA-1542 | brain, exercise
Neuromodulators are involved in a variety of processes including pain
modulation, reward, response to stress, and autonomic control.
In humans, acute exercise causes significant increases in peripheral
levels of endogenous opioids; this effect is intensity-dependent,
corresponds to acute exercis... | [
"dead-lifting",
"thinking",
"sleeping",
"singing"
] | A | exercise has a positive impact on a body 's strength |
OpenBookQA | OpenBookQA-1543 | botany, reproduction
Most new commercial tomatoes, including new garden tomatoes, are F1 hybrids. The seeds you plant in the field are the result of crossing two parents, as described above. (...) Garden catalogs will tell you whether the seed you are buying is hybrid. If you are getting your fruits from the store, yo... | [
"yard stick",
"a bench",
"a flashlight",
"candy"
] | A | a stem is a source of support for a plant |
OpenBookQA | OpenBookQA-1544 | matter
When a solid is dissolved in a liquid, is it still a solid
I want to touch on this too, because there's a useful subtlety here.
When you put salt in hot water, it dissolves. In this case the energy from the water is enough to overcome the attraction between the atoms, and it is pulled off the crystal to mix wi... | [
"drowning in the Atlantic ocean",
"setting the burner to maximum",
"setting the burner to minimum",
"gargling salt-water in the shower"
] | B | as temperature increases , the ability of that liquid to dissolve solids will increase |
OpenBookQA | OpenBookQA-1545 | civil-engineering, construction-management
Title: Why use two tower cranes on one construction site? I am fascinated by construction. My university is building a new facility, and they are using 2 tower cranes in the construction.
Why would a contractor choose to use 2 cranes on one construction project? Is it simply ... | [
"cause animals to play",
"cause animals to celebrate",
"cause animals to marry",
"cause animals to suffer"
] | D | humans changing animal habitats usually causes harm to those animals |
OpenBookQA | OpenBookQA-1546 | Bridge Mountain Climb, Malvan Village Ghost Story, Graham Greene Rdr2, Bd Script Font Canva, Vintage Toy Tractor Price Guide, Software Developer No Experience, Fire Pit Insert Round, Classroom Leadership Pdf, Police Officer Hard Skills, How To Separate Succulent Arrangement,
The following is multiple choice question (... | [
"carnivores",
"hard of hearing",
"very large",
"potatoes"
] | B | meadow voles eat plants |
OpenBookQA | OpenBookQA-1547 | climate-change
Source: World Meteorological Organization Press Release No. 976: 2001-2010, A Decade of Climate Extremes
The above image speaks for itself. The global temperature change over the last forty years is very real, and is not noise.
With regard to point #2, yes the climate has changed in the past, and by hu... | [
"wreck it",
"make it cry",
"make it laugh",
"do nothing"
] | A | humans changing an environment sometimes causes that environment to be destroyed |
OpenBookQA | OpenBookQA-1548 | = ",Count[Drop[branches,gen],_Real,\[Infinity]]/4" "" ""Length = ",SetAccuracy[Count[Drop[branches,gen],_Real,\[Infinity]]/4*(Norm[{{pt1[[1]],0.5},{0,0}}]^gen),3]}],18],Gray],{2.3,-1.8}]},{Inset[Style[Text@TraditionalForm@Style[Row[{"Polynomial Trees by Bernat Espigulé"}],18],Gray, Opacity[0.4]],{2.3,-2}]}},P... | [
"A large fibrous mass",
"plants on the forest floor",
"the wooden welfare state",
"massive redwoods on the backs of turtles"
] | A | a trunk is a source of support for a tree |
OpenBookQA | OpenBookQA-1549 | explosions
Title: What will happen to you if you're standing near exploding TNT bomb near 20meter away in Vaccum? What I think here could be ,that we'll feel less powerful shock wave as there is no medium of air through which gases can travel . If their is any other possibilities than please suggest ! You'll want to a... | [
"Air",
"communities",
"darkness",
"Sunlight"
] | B | explosions can cause harm to an organism |
OpenBookQA | OpenBookQA-1550 | speed of the car in miles per hour? what dimensions should he use? Custom Solutions. Find the fraction. Find the fraction. Given : This year, the chickens laid 30% less eggs than they did last year and they laid 3500 eggs this year. This was$14 less than twice what she spent for a blouse. So, the chickens laid 5000 egg... | [
"how wide the road is",
"how tall the building is",
"how the weather is",
"the space between destinations"
] | D | calculating speed requires knowing distance travelled |
OpenBookQA | OpenBookQA-1551 | electric-circuits, potential, electrical-resistance, conductors
These analogies are not exact and are only intended to give you a better feel as to what is happening.
Hope this helps.
The following is multiple choice question (with options) to answer.
An example of an electrical circuit could be | [
"Dimming the lights",
"Driving a car",
"Drinking water",
"Riding a bike"
] | A | a light bulb converts electrical energy into light energy when it is turned on |
OpenBookQA | OpenBookQA-1552 | entomology
Title: What is the name of this tiny creature? It looks like a tiny piece of moving cotton? By chance, I saw this tiny insect on my bag a few days ago in Sydney. Am I the first person who has pinpointed this animal?! If not can you please let me know its name? From your image, it looks like it might be a wo... | [
"another world",
"boiling water",
"candle fragments",
"larger mineral chunks"
] | D | sediment is formed by weathering |
OpenBookQA | OpenBookQA-1553 | Apply this under both cases (500lbs and 200lbs) you should get your ans
• October 13th 2009, 10:03 AM
Soroban
Hello, fifthrapiers!
Quote:
If 15 workers can pave 18 driveways in 24 days,
how many days would it take 40 workers to pave 22 driveways?
It helps if you understand the "algebra" of these work problems.
$\be... | [
"distant cities burn down",
"things stay the same",
"distant locations build quarries",
"distant locations have greater produce options"
] | D | as ability to transport food increases around the world , the available types of food in distant locations will increase |
OpenBookQA | OpenBookQA-1554 | temperature, sun, light, equator, insolation
Title: Why does the intensity of sunlight depend on your latitude? People at the equator get to bask in more sunlight than Santa Clause and other inhabitants of the arctic regions. Not quite as pronounced, but they get more than me too.
Why is the sunlight more intense clos... | [
"swim",
"eat",
"sleep",
"run"
] | B | In the food chain process some types of plankton have the role of producer |
OpenBookQA | OpenBookQA-1555 | measurements, data-analysis
Practically speaking, however, all real mediums of communication require the size of the string to be bounded. If you have 40 pages in a journal article to describe your results, you only have 120000 characters to capture your result (assuming roughly 3000 characters per page). This can o... | [
"seismograph",
"lie detector",
"geiger counter",
"glass of water"
] | A | a seismograph is a kind of tool for measuring the size of an earthquake |
OpenBookQA | OpenBookQA-1556 | electromagnetism, energy, electric-current
Title: Where does the energy of the electric cable come from? I'm stuck on one really simple example, I can't figure out what's happening to energy here...
(This is not homework)
Let's consider an uncharged electric cable, we'll model it by an infinite cylinder on the axis $(... | [
"plastic",
"stone",
"plants",
"swords"
] | D | metal is an electrical energy conductor |
OpenBookQA | OpenBookQA-1557 | rocks, remote-sensing, archaeology, ground-truth
Together, #1, #2, and #3 tell us that it's probably early summer just after the river ice has broken up.
The tooth-like features in the left image are simply erosional remnants sticking out of the riverbank. They could be bedrock (not likely), ice wedges, unmelted perm... | [
"a clone",
"an emission",
"a flood",
"a mistake"
] | B | mountains are formed by volcanoes |
OpenBookQA | OpenBookQA-1558 | Kudos [?]: 4 [2] , given: 0
Re: Good set of PS 2 [#permalink] 19 Oct 2009, 08:02
2
KUDOS
Bunuel wrote:
4. A contractor estimated that his 10-man crew could complete the construction in 110 days if there was no rain. (Assume the crew does not work on any rainy day and rain is the only factor that can deter the crew f... | [
"candy",
"communities thrive",
"cooking",
"bread"
] | B | rain is a source of water |
OpenBookQA | OpenBookQA-1559 | 51. Trisaba
thanks for the help
52. dan815
|dw:1441062793507:dw|
53. dan815
this is the full break down
54. dan815
they will probably ask u a final question like the chance it will rain, when there is a prediction of rain
55. Trisaba
60%
56. Trisaba
bayes' theorem
57. Trisaba
thanks for helping dan
58. da... | [
"on your shoes",
"on the side",
"at the footing",
"at the top"
] | C | water flows down a slope |
OpenBookQA | OpenBookQA-1560 | fluid-dynamics, flow
Title: Where does the air go behind a wind turbine? A wind turbine receives wind at 10m/s, and slows it to 5m/s to generate electricity.
Does this mean that the wind around the turbine must be diverted to allow twice the cross-section area for the exiting wind?
If not, how does the exiting air esc... | [
"food",
"music",
"architecture",
"charged electrons"
] | D | a windmill converts wind energy into electricity |
OpenBookQA | OpenBookQA-1561 | photosynthesis, botany
Title: Photosynthesis - Light Intensity Say I was conducting an experiment for photosynthesis. If I moved light closer to the plant, what effect would this have on the process of photosynthesis? The rate of photosynthesis varies from plant to plant. Some plants require more light and some requir... | [
"water",
"sunlight",
"cake",
"soil"
] | C | a plant requires sunlight for photosynthesis |
OpenBookQA | OpenBookQA-1562 | So by my equation I get that they are of equal purity.
Kalyan.
4. ## Re: Purity
Hello, PASCALfan!
Two vessels contains equal amount of water and beer.
1 spoon beer is added to the water and mixed well.
From this mixture 1 spoon is added to the beer.
Which of the liquids is more pure?
This is the classic "Wine and ... | [
"ice",
"water",
"soda",
"air"
] | C | dissolving a substance in water causes the water to taste like that substance |
OpenBookQA | OpenBookQA-1563 | electromagnetism, magnetic-fields, history
Title: What this thing is and what it's used for? Images:
I'm not sure if this is the right stackexchange to ask this question but i haven't found a "gas display detection and measuring devices" stackexchange so physics seems like a somewhat reasonable place to ask.
I've fou... | [
"trash that can be used for a new purpose",
"excess and unused portions of soylent green",
"radioactive nuclear waste materials",
"hazardous biological materials and waste"
] | A | recyclable means a material can be recycled |
OpenBookQA | OpenBookQA-1564 | • I think the gif dosn't really fit this site, though I can't say if there is a specific rule against such things – Yuriy S Oct 10 '16 at 11:27
• @YuriyS: Hmm ... I am sorry to learn that people may find it inappropriate! That was by no means my intention! Do you think it would work better by removing the gif an leave ... | [
"a giraffe",
"a politician",
"a vulture",
"a whale"
] | C | scavengers eat dead organisms |
OpenBookQA | OpenBookQA-1565 | mass, weight
Title: How to weigh your nephew My nephew is 3 and weighs around 30 pounds I am guessing. However, I would like to weigh him at home. I have kitchen scales, one flat one that goes up 1kg and one that looks like this picture that goes up to 5kg.
What is a safe and practical way I can weigh my nephew at h... | [
"cake",
"cheese",
"candy",
"spinach"
] | D | a living thing requires nutrients to grow |
OpenBookQA | OpenBookQA-1566 | radiation
You see similar things happening here. The metal rod at the top of the lamp acts as a capacitive ground - given the very high voltage, a tiny charge will flow from the tip of the filament to the rod. There is a small amount of gas in the tube which is ionized and gives rise to the light you see. The electron... | [
"light snacks",
"greens",
"food",
"illumination"
] | D | a flashlight converts chemical energy into light energy |
OpenBookQA | OpenBookQA-1567 | geology
Title: Where do riverbed stones come from? Have they always been here since the river was formed? Are some newer than others? Riverbed 'stones' - I assume you mean things like pebbles, boulders, etc. are pieces of rock that have weathered out and been deposited in the river. Some come from rock that is very... | [
"milk",
"cheese",
"aluminium",
"honey"
] | C | rocks often contain large amounts of metal |
OpenBookQA | OpenBookQA-1568 | everyday-chemistry, thermodynamics, surface-chemistry
Why did the cardboard start to curl up as it began to burn?
Why did it retain its texture if not shape and size? The curling up has a simple reason: the burning was not uniform. Paper contains water (really!), and heating it makes it lose the water.
Now, paper is a... | [
"balloons",
"plastic bottles",
"leaves",
"books"
] | C | waxy leaves are used for storing water by some plants |
OpenBookQA | OpenBookQA-1569 | humidity, air-pollution
Title: Does usual city pollution have effects on relative humidity? I've noticed that in a rural area with low pollution the relative humidity is constantly lower than the humidity in a high polluted city. Is there any correlation between pollution and humidity? By way of reference, "humidity ... | [
"refuse facility",
"greenhouse",
"the white house",
"capital building"
] | A | an landfill is a source of pollution |
OpenBookQA | OpenBookQA-1570 | newtonian-mechanics, rotational-dynamics, moment-of-inertia
Agree upon what "the Earth" means, and the answer becomes simple.
The answer probably depends on what you intend to do with the earth. If you want to make it spin just a hair faster, then your definition is probably the more useful. Atmospheric drag and the... | [
"a cloud is going to rain",
"the moon is in the sky",
"a day has passed on Jupiter",
"the sun rose, set and rose again"
] | D | a Rotation of the Earth on itself takes one day |
OpenBookQA | OpenBookQA-1571 | In the case where the contestant opens a door other A, not knowing if the prize is behind that door, we do not know in advance that door B would not reveal the prize. The chance that the door B reveals the prize is much lower in the case where the door A is the prize door than in the case where it is not (probability $... | [
"still white",
"grey",
"white",
"clear"
] | B | painting an object a color causes that object to be that color |
OpenBookQA | OpenBookQA-1572 | newtonian-mechanics, reference-frames, inertial-frames, relative-motion
This provides the additional force required to move at the same acceleration as the car.
At this instant , your acceleration with respect to the car becomes zero and you no longer move backwards .
You can analyze this situation from the car frame ... | [
"slightly accelerate",
"stop",
"slow down",
"turn"
] | A | a force continually acting on an object in the same direction that the object is moving can cause that object 's speed to increase in a forward motion |
OpenBookQA | OpenBookQA-1573 | thermodynamics, geophysics
Second, any closed system evolves toward thermal equillibrium. In simple terms, if you leave a hot coffee on your table, it will eventually cool down to room temperature. Even though compression increases temperature, this doesn't mean that constant pressure keeps producing more and more hea... | [
"vitamins",
"cracks",
"minerals",
"holes"
] | C | minerals are formed from magma cooling |
OpenBookQA | OpenBookQA-1574 | particle-physics, interactions, subatomic
STM Image of Iron
In your post title, you ask for details at the subatomic level, which I don't think anybody can provide you with.
So I have cheated a bit, and displayed a Scanning Tunnelling Microscope Image at the atomic level, which may be on the scale of the best image... | [
"venus",
"mercury",
"plasma star",
"pluto"
] | C | plasma is formed by electrons separating from atoms in stars |
OpenBookQA | OpenBookQA-1575 | Wisconsin Wildflowers Yellow, Adaptability Culture In Organizations, Tree Of Savior Hunting Grounds 2020, 2 Timothy 2:16 Kjv, Aristolochia Florida Native, Best Grass For Goats In The Philippines, Seymour Duncan Sh2 Bridge,
The following is multiple choice question (with options) to answer.
A goat in a lush field of de... | [
"four lucky hooves",
"poor growth",
"a tin can",
"a shiny coat"
] | D | an animal being born when food is available has a positive impact on that animal 's health |
OpenBookQA | OpenBookQA-1576 | behaviour
Title: What happens to silverfish when we throw them out the window? I'll find a silverfish from time to time in my flat. I don't mind them but usually I catch them and throw them off the balcony (second story) into the bushes and lawn below.
I was wondering, since they seem to live in the water conduits in ... | [
"it is extinguished",
"it may flourish",
"it is financed",
"it may crash"
] | B | when a habitat can support living things , living things can live in that habitat |
OpenBookQA | OpenBookQA-1577 | star, orbit, exoplanet, kepler
Title: How do astronomers determine the texture of an exoplanet? So I was wondering how astronomers are able to get the texture/detail of an exoplanet or how they know a planet has water or not. I know how they discover planets by using the light of a star and seeing if it gets faint or... | [
"they complete rotations",
"they have atmosphere",
"they are glowing",
"they have life"
] | A | pluto has not cleared its orbit |
OpenBookQA | OpenBookQA-1578 | homework-and-exercises, radiation, earth, sun
Title: How much radiation does the Earth receive from the Sun's total radiation? I was thinking how to solve this problem. $1\,\mathrm{AU}$ is roughly the distance from the Earth to the Sun, $1.4960 \times 10^{11}\,\mathrm{m}$.
The radius of Earth is approximately $6.4 \ti... | [
"releases CO2",
"loses mass",
"swells",
"thermally increases"
] | D | as temperature during the day increases , the temperature in an environment will increase |
OpenBookQA | OpenBookQA-1579 | visible-light, atmospheric-science, sun
Title: Why is there less UV light on earth in winter? So I have often read that, at least in e.g. northern Europe, in the colder seasons, there is not enough UV (-B) light arriving from the sun, so many people have not enough vitamin-D from that.
At first I thought it was simply... | [
"height",
"distance",
"it's axis",
"width"
] | C | the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side |
OpenBookQA | OpenBookQA-1580 | navigation, 3d-navigation
Originally posted by M@t with karma: 2327 on 2017-03-14
This answer was ACCEPTED on the original site
Post score: 17
Original comments
Comment by raultron on 2017-11-21:
Amazing answer. Thank you very much.
Comment by Amina23 on 2020-03-05:
thank you . you're awsome !
Comment by darshb34 on ... | [
"reading novels",
"directing rudder",
"cooking",
"sleeping"
] | B | An example of navigation is directing a boat |
OpenBookQA | OpenBookQA-1581 | the-moon, moon-phases
Because the full Moon happens when the Moon and Sun are on opposite sides of the Earth, the Moon is most directly opposite the Sun near the Spring and fall equinox. That makes the Harvest Moon (full moon closest to the fall equinox) and the full Moon closest to the spring equinox, more directly... | [
"Earth shines",
"stars absorb it",
"sunlight brightens it",
"batteries power it"
] | C | the moon reflects sunlight towards the Earth |
OpenBookQA | OpenBookQA-1582 | Hey, thanks for your help guys. For a minute there, I thought that this theoretical person could not safely expect to live to be 82 years old.
9. Jun 16, 2012
### SW VandeCarr
In fact, on a purely probabilistic basis, for any finite time no matter how large, there is a non zero probability that a person would surviv... | [
"harvest human organs",
"burn crops",
"purchase produce",
"spend time alone"
] | C | humans eat crops |
OpenBookQA | OpenBookQA-1583 | volcanology
Title: Does the size of Earth increase due to volcanism? In a volcanic eruption, magma rushes to the 'outside' of the Earth. Does this mean the size of Earth also increases? If not, how is the volume left after the magma rushed out refilled? This is actually a more complicated question than it seems on the... | [
"drips",
"suspends",
"freezes",
"sticks"
] | A | matter in the liquid state drips |
OpenBookQA | OpenBookQA-1584 | the-moon, meteoroid
Why: Due to how the velocities all work out, the Moon is always moving forward in its path around Earth / the Sun. It never actually back-tracks during half of its orbit against our orbit around the Sun because the orbit around the Sun is faster than its orbit around Earth. Because of this prefer... | [
"smooth",
"Earth",
"rainbow",
"edible"
] | A | the moon 's surface contains flat areas |
OpenBookQA | OpenBookQA-1585 | species-identification, marine-biology
Title: help identify this fish
I came across this washed up fish in Panama City, Florida in November 2015. I'm guessing it's a puffer fish but I can't find anything like it online.
Thanks. This is a kind of trunkfish. (They have different names, this could be a smooth or spotte... | [
"cannibals",
"Dry",
"Land animals",
"Magic"
] | A | carnivores only eat animals |
OpenBookQA | OpenBookQA-1586 | zoology, ecology
Giraffes' this is an energy saving feature. Giraffes don't need to use muscles to hold their neck. They just use when flexing their necks down, when drinking water etc.
According to Wikipedia, for an alternative hypothesis Ouranosaurus have a hump. (Other hypothesis is display sail or termoregulation... | [
"Iraqi roadside prime cuisine",
"seats for desert dwellers",
"a popular brand of shoe",
"changing to meet the environment"
] | D | An example of an adaptation is camel humps |
OpenBookQA | OpenBookQA-1587 | forces, pressure, fluid-statics, air, gas
I hop this description is clear enough, if not, feel free to ask for an explanation.
EDIT: Alright, I think I have understood it now. So the vacuum fills up because gas molecules move "randomly" around all the time and bump into each other. If there is a vacuum somewhere, the... | [
"in circles",
"forward",
"down",
"up"
] | D | a balloon contains gas |
OpenBookQA | OpenBookQA-1588 | evolution, biochemistry, physiology, speculative, bioinorganic-chemistry
While iron skeletons might seem to be an advantage, they are electrochemically unstable - oxygen and water will tend to oxidize (rust) them quickly and the organism would have to spend a lot of energy keeping it in working form. Electrical condu... | [
"a mountain lion",
"a sky color",
"a stone configuration",
"a mouse carcass"
] | C | rocks are a source of shelter for small animals in an environment |
OpenBookQA | OpenBookQA-1589 | concentration
Title: Shouldn't mineral NPK fertilizer ingredients add up to 100%? I use a mineral based fertilizer in powder form which - according to the label - should not contain any fiber and is fully soluble in water (I dissolved 2 times the recommended dosage and found no solids remaining in the solution):
Th... | [
"the highest portion of the ozone layer",
"the rotten idea of a decaying democracy",
"waves of salt-water moving back and forth",
"chemical substances found in every living thing"
] | D | if some nutrients are in the soil then those nutrients are in the food chain |
OpenBookQA | OpenBookQA-1590 | zoology, species-identification, ornithology, behaviour
Title: What is this crow eating, and is it a common part of the corvid diet? Here's a picture (by Rob Curtis) of a crow carrying and eating the corpse of what looks a bit like a small hawk or falcon:
Other pictures clearly show the crow is eating the dead bird. ... | [
"grass",
"underground crawlers",
"insecticide",
"trees"
] | B | birds sometimes eat insects |
OpenBookQA | OpenBookQA-1591 | human-biology, food, neurotransmitter, receptor, taste
Title: Why do Hot/Cold drinks taste sweeter once returning to room temperature? Now, I know this is a very bizarre question, and I tried to find a correct exchange for this, but it might relate to biology/science as it being our taste buds and everything.
I am so... | [
"crystal sucrose",
"heat",
"salt",
"pepper"
] | A | sugar causes food to taste sweet |
OpenBookQA | OpenBookQA-1592 | species-identification
Title: What bird / animal has this call? USA MA NE
I have a bird / animal coming to the trees in the backyard making this call (see link to audio file), which does not really sound like a bird - it's fairly low frequency. I have not seen it. Sometimes it sits in a young tree, where you can almos... | [
"box",
"field",
"ocean",
"tree"
] | B | female birds sit in nests |
OpenBookQA | OpenBookQA-1593 | # Combination Question
#### Swazination
##### New member
How many combinations can I make if I have 4 letters A,G,C,T and I want to make groups of 5. Yes, you can repeat the letters.
#### Denis
##### Senior Member
From AAAAA to TGCAA
or (if replaced by digits 1 to 4):
from 1111 to 43211
Yes?
#### ksdhart2
##### ... | [
"toilet paper",
"cloth pad",
"tampon",
"drugstore pad"
] | B | something reusable can be used more than once |
OpenBookQA | OpenBookQA-1594 | orbital-motion, space, rotation
Title: How many times does the ISS celebrate New Year each year? My question is, how many times each year do the crew of the ISS have an opportunity to celebrate New Year? Does it vary each year or will it be a fixed number?
I tried to work this out for myself and my brain just went ba... | [
"night illuminator",
"clouds",
"oceans",
"moon pictures"
] | A | the moon orbiting the Earth approximately occurs 13 times per year |
OpenBookQA | OpenBookQA-1595 | Buffon's needles : lab report: purpose the purpose of this project is to explore a monte carlo method of estimating the value of pi (p), which was first discovered by count buffon in 1733 buffon's needle: an analysis and simulation. Buffon's needle, mste, university of illinois mste office for mathematics, science, and... | [
"make food tasty",
"make food healthier",
"make food wet",
"make food green"
] | B | Louis Pasteur invented pasteurization |
OpenBookQA | OpenBookQA-1596 | (495, 1), (496, 1), (496, 3), (494, 3), (494, 1), (495, 1), (495, 2), (493, 2), (493, 1), (494, 1), (494, 3), (493, 3), (493, 2)$$ Here is an illustration of this cycle:
The following is multiple choice question (with options) to answer.
365 solar cycles is equivalent to | [
"4 full moon cycles",
"2 years in deep space",
"a trip to the moon and back",
"one trip around the sun"
] | D | one year is equal to 365 days |
OpenBookQA | OpenBookQA-1597 | electric-circuits, electric-current, electrical-resistance, batteries, short-circuits
Title: The importance and the role of a switch in an electrical circuit There is this simple test:
Three identical bulbs are connected in the circuit illustrated in the figure. When switch $S$ is closed:
a] The brightness of $A$ and... | [
"it fails",
"it succeeds",
"it shines",
"it works"
] | A | electricity can not flow through an open circuit |
OpenBookQA | OpenBookQA-1598 | photons, material-science, absorption, optical-materials, glass
There are further complications to all of this as well. Will the light undergo scattering processes that may allow the light to move through a material, while changing directions and potentially even turning back on itself without being absorbed? Once lig... | [
"go out",
"dim",
"deflect",
"brighten"
] | C | objects made of glass cause refraction of light |
OpenBookQA | OpenBookQA-1599 | energy-efficiency, thermal-insulation
greater if the window is bigger
less as temperature difference get smaller
Radiative heat transfer
The main factor that is of consideration here is the solar radiation. There are three types of radiation:
Direct radiation: the direct rays of the sun. (this is zero on a cloudy d... | [
"January",
"December",
"July",
"a cave"
] | C | the amount of daylight is greatest in the summer |
OpenBookQA | OpenBookQA-1600 | quantum-mechanics, electromagnetism
Title: Can you magnetize iron with a hammer? We know that a piece of ferromagnet, such as iron, can be magnetized by putting in a strong magnetic field to get domains parallel to the field grow.
I also remember from pop. culture and MacGyver old tv series that you can magnetize a p... | [
"frozen",
"reactively charged",
"cold",
"magnetic personality"
] | B | if battery in an electromagnet is active then the nail in the electromagnet will become magnetic |
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