Please tell the answer:

An electric fan converts electricity into-

a. sound energy only
b. sound energy and heat energy only
c. Mechanical energy, sound energy and heat energy
d. Mechanical energy, sound energy, heat energy and chemical energy


Thank You

What do you think are the answers? We are not supposed to give you the answers directly. Showing you how to answer is the best way we can help you.

Think about a fan you can have. What do you have? Do you hear a sound when it's on?Does it get hot? Does it move (that's kinetic energy) ? Are molecules involved (for chemical energy, you need energy stored in substances, molecules, etc) ?

The answer is c.mechanical,sound and heat energy

Uh... right, but I think it's too late... the question was asked last year, on the 23rd of June 2009...