3. A 250 g car is released from rest at the top of a frictionless incline, 5 m above the ground.

What are the tiny particles that make up elements called?

5.25 calories are absorbed by an iron nail. How many joules is this?

Entropy measures a. temperature as volume increases. b. temperature as pressure increases. c. temperature at constant pressure. d. messiness. e. temperature at constant volume.

Sunscreen protects your skin from sunburn. For sunscreen to be effective, it must block or absorb A. X rays. B. visible light. C. infrared light. D. ultraviolet light.

What is the difference between reflection and refraction

How does scientific knowledge develop through making observations about the natural world?

Why do the earth have many states

Problem page a cyclist traveled 20 kilometers per hour faster than an in-line skater. in the time it took the cyclist to travel 80 kilometers, the skater had gone 30 kilometers. find the speed of the skater.

What is emitted during fission

If a magnet is broken into two pieces, what happens to the magnetic poles? One piece will have a north pole, while the other piece will have a south pole. Each piece will still have a north pole and a south pole.