1. show how the alternative definition of power, found in your book, can be derived by substituting the definitions of work and speed into the standard definition of power, p = w / delta t. 2. a real spring does not oscillate forever. instead, it eventually comes to a stop. does this violate the law of conservation of energy? explain why or why not.

1) Star from the definition of power:

P = work/ time = W / Δt

We know that work is given by force times displacement:
 W = F · Δd
Substituting in our formula: 
P = F · Δd / Δt

But we know by definition that Δd / Δt = velocity, therefore we can write:
P = F · v
which is the alternative formula saying that Power is equal to Force times Velocity

2) No, it is not a violation of the Law of conservation of energy because as the spring slows down, the kinetic energy is transformed into potential energy and their sum stays constant.

Ibelieve the correct answer would be c.

A. they hold atoms  together with a molecule.its a force that exist between molecules. hope this .