Geocentric theory:

a. was initially rejected

b. was in contradiction to the ideas of Ptolemy

c. stated that the sun revolved around the earth

d. all of the above

What happens to an object when you increase or decrease its density

When is acceleration the greatest on a graph

3 examples of crystals

Blue light has a higher frequency than X-rays. (A) True (B) False

Scientific endeavor should only be pursued after known tradeoffs associated with the research have been considered. True False

A 58.0 kg snow skier is on the top of 351 m high hill. After she has gone down a vertical distance of 142 m, what is her mechanical energy? Explain your answer (CER) !

A sphere has a mass of 2.10kg and travels along a horizontal plane at the velocity of 12.2m/s. Find the energy

What is the force required to accelerate a baseball with a mass of 0.145 kilograms and an acceleration of 35.00 meters/second squared?

A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

If the speed of a vehicle was reduced from 65 miles per hour to 35 miles per hour, by approximately how many kilometers per hour was the speed reduced? (1 kilometer = 0.62 mile, rounded to the nearest 0.01 mile)