Which shows that energy is being transformed? A. A swinging pendulum
B. A ream of paper inside a box
C. A candle resting on a table
D. A glass inside a cabinet​

What happens to light waves from a star as the star moves away from earth?

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?