Which of the following is an example of chemical energy being released or stored?
A. The wind blows a kite through the sky.
B. The water in a river moves small rocks and sticks.
C. A coal power plant releases energy when coal burns.
D. Harp strings make noise when the harp is played.

C

Explanation:

When something is chemical it is warped into a completely new substance and when coal is burned it is new so it is definitely C.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)