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

What is the term for the force exerted on an object by another object? A) action force B) collision force C) reaction force D) net force

a farmer lifts a bale of hay that is 12m off the ground. If he uses a force of 350 n, how much work does the farmer do?

500 J of heat is added to the gas in an isothermal process. As the gas expands, pushing against the piston, how much work does it do?

The distance between a charge and the source of an electric field changes from 3 mm to 6 mm. As a result of the change, the electric potential energy of the charge is A. divided by 6 B. divided by 2 C. multiplied by 2 D. multiplied by 6

What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? the refractive indices for water, glass, and diamond are 1.33, 1.50, and 2.42, respectively.

A tree is standing in the middle of a meadow. As you watch, the wind begins to blow and the tree bends. Which statement best explains how you could tell that a net force was acting on the tree? OA) The tree had momentum.

Consider two cars, a 700kg Porsche and a 600kg Honda Civic. The Porsche is speeding along at 40 m/s (mph) and the Civic is going half the speed at 20 m/s.

Which statement about an electron in the 4d state is correct? A. The magnitude of its orbital angular momentum is 6√ℏ. B. The largest orbital angular momentum it could have in any given direction is 4ℏ. C.

A D note has a frequency of 587.33 Hz. Calculate its wavelength in meters. The speed of sound is 343 m/s

A cyclist allows his bike to roll down a hill without pedaling. Towards the bottom of the hill he applies his brakes. The bike comes to a stop. Applying the brakes causes the brakes to warm up. Describe the energy transfers that have occurred.