Electric current flows when there is a-

a. charge pump

b. closed circuit

c. conductor

d. all of these

Which of the following is true about the law of conservation of energy? Energy can be destroyed Energy can be created Energy can be converted from one form to another All of the above are correct

What change if state occurs when water vapor from a hot shower forms small droplets of water on a bathroom mirror?

The composition of an igneous rock depends primarily on:

At a molecular level, does plasma have more or less energy than other states of matter?

A ball slows down as it rolls up a hill this is an example of

What is the concentration of H + ions at a pH = 7?

Suppose that Paul D. Trigger fires a bullet from a gun. Will the speed of the bullet leaving the muzzle will be the same as the speed of the recoiling gun? Explain.

A certain rock contains large jagged pieces of other rocks cemented by fine particles what type of rock is this explain

Could a nucleus that has one proton but no neutrons exist?

Which physical quantities has the unit kg·m·s-1?