What is the unit of electrical force?
a. n
b. c
c. n-m
d. n-c2?

Immediately upon reaching its lowest point, a falling pendulum bob has its greatest amount of energy, which is the initial amount of potential energy. a. heat; less than b. heat; more than c. kinetic; less than d. kinetic; more than

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

If you put a helium-filled balloon in the refrigerator, what will happen?