A 10 kg box is 1.3 m above the ground. How much potential energy does it have? (g on Earth of 9.8 m/s? answer =
GPE = mgh
KE = .5mv2
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How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.