Answer the following question given this paragraph: Example 3.5 Calculating Projectile Motion: Hot Rock Projectile Kilauea in Hawaii is the world's most continuously active volcano. Very active volcanoes characteristically eject red-hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano with a speed of 25.0 m/s and at an angle 35.0 above the horizontal, as shown in Figure 3.40. The rock strikes the side of the volcano at an altitude 20.0 m lower than its starting point. (a) Calculate the time it takes the rock to follow this path. (b) What are the magnitude and direction of the rock's velocity at impact?. Q: Kilauea in hawaii is the world's most continuously active volcano. very active volcanoes characteristically eject red-hot rocks and lava rather than this? Choices: - greenhouse gases - carbon and smog - magma - smoke and ash A:
smoke and ash
Answer the following question given this paragraph: A chemical reaction is a process in which some substances, called reactants, change into different substances, called products. During the reaction, chemical bonds break in the reactants and new chemical bonds form in the products. Q: What type of reaction is a process in which some substances, called reactants, change into different substances, called products? Choices: - reversible reaction - physical reaction - toxic reaction - chemical reaction A:
chemical reaction
Q: Answer the following question given this paragraph: Plastids are membrane-bound organelles with their own DNA. Examples are chloroplasts and chromoplasts. Chloroplasts contain the green pigment chlorophyll and carry out photosynthesis. Chromoplasts make and store other pigments. They give flower petals their bright colors. Q: Chloroplasts and chromoplasts are examples of which membrane bound organelle containing their own dna? Choices: - chromosomes - polymers - bacteria - plastids A:
A: plastids
Question: Answer the following question given this paragraph: Neutralization reactions between an acid and a base yield a salt and water. In some cases, this results in a completely neutral solution. However, some salts are weakly acidic or basic. How can we tell whether a given salt will act as an acid or base? Looking at the relative strengths of the acid and base that were used to form the salt can give us information on the acid-base properties of the resulting solution. Q: What kind of reactions between an acid and a base yield a salt and water? Choices: - oxidation - evaporation - distillation - neutralization A:
Answer: neutralization
*Question*
Answer the following question given this paragraph: Energy comes in discrete packages called quanta. Q: Energy comes in discrete packages called what? Choices: - quasar - quota - quasi - quanta A:
**Answer**
quanta
Answer the following question given this paragraph: It is estimated that 100 trillion bacteria live in the gut. This is more than the human cells that make up you. It has also been estimated that there are more bacteria in your mouth than people on the planet. There are over 7 billion people on the planet. Q: An estimated 100 trillion of these live in the gut of an average person? Choices: - viruses - pathogens - algae - bacteria A:
bacteria