Which of the following examples describes an increase in potential energy?

a. a bicycle going down a hill

b. a basketball falling through a net

c. a rollercoaster moving down the track

d. a paint can being carried up a ladder

A circuit has a resistance of 10ohmsband a current of 42 amps. caculate the voltage

Which of the following statements is not true regarding atmospheric pressure? A. When atmospheric pressure is higher than the absolute pressure of a gas in a container, a partial vacuum exists in the container B.

At a speed of 60 mph, how far does your car travel in 3 seconds

The Intensity of solar radiation at the Earth's orbit is 1370 W/m^2. However, because of the atmosphere, the curvature of the Earth, and rotation (night and day), the actual intensity at the Earth's surface is much lower.

Lactic acid is the cause of muscle fatigue. A. True B. False

Critical thinking! Applying Concepts A desk exerts an upward force to support a computer resting on it. Does this force do work? Explain.

When an inclined plane is used, A. the mechanical advantage increases as the height increases. B. a smaller force is exerted over a longer distance. C. a negative mechanical advantage can result. D. a greater force is exerted over a shorter distance

A 4-kg cat is resting on a bookshelf that is 3m high. What is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s squared

If a 100 N net force act on a 50-kg car, what will the acceleration be

According to the modern classification system, which list is written correctly from least specific to most specific?