you have a machine that tells you exactly how much work in joules is put into a machine and how much work was produced. The input is; 345 joules, and output is; 330 joules. The law of conservation of energy states that Fi should equal Fo. How can you explain the "lost" 15 joules?

Question

jamesj · Answer

When you drive your car, it takes in more energy that it puts out in accelerating the car.  Where did that energy go?

jamesj · Answer

The engine is hot. A lot of the lost energy is converted into heat.

Now can you answer your question?