We use electrical devices leopard deuce motion, light, and sound. Which aspect of energy explains why these devices are possible?

A) Energy can’t be created
B) Energy can change from one form to another
C) Energy isn’t made of matter
D) Energy can’t be destroyed

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

For two variables in a direct proportion, what is the result of doubling one variable?