Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides down the hill is a form of

A.

chemical energy.

B.

potential energy.

C.

mechanical energy.

D.

electrical energy.

The slope of a speed-time graph indicates A. acceleration. B. direction. C. speed. D. velocity.

Air becomes a conductor when the electric field strength exceeds 3.01 * 106 N/C. Determine the maximum amount of charge that can be carried by a metal sphere 5.0 m in radius. The value of the Coulomb constant is 8.99 * 109 N · m2 / C 2.

What equation is used to calculate the weight of an object on a plant?

If you pull on a box that weighs 100 kilograms with a force of 75 newtons, but you just can not budge the box and it does not move at all, how much work did you do?

Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.

Classify the sentences based on whether they describe temperature or thermal energy.

Let the magnitudes of two displacement vectors be 4 m and 8 m, respectively. If the two vectors are added, the magnitude of the resultant vector. A. is exactly equal to 4 m. B. is exactly equal to 12 m. C. is greater than 12 m. D.

Which statement is true? The speed of sound in air is inversely proportional to the temperature of the air. The speed of sound in air is directly proportional to the temperature of the air.

What is the molar mass of an ideal gas if a 0.800 g sample of this gas occupies a volume of 200. mL at 50.0 oC and 720. mm Hg?

When unequal resistors are connected in parallel in a circuit,?