energy loss?

Question

what is energy loss, why does it happen, does it always happen, are there any exceptions...please answer anything you know about energy loss im doing a experiment that may or mayn not work beacuase of energy loss...also do you think it is possible for a car to run on turbines turned by the wheels..please explain

Answer 1

Energy itself is never lost it is just converted into different forms ( look up conservation of energy in physics) . For example, heat energy from the sun causes grass to grow which is then converted into food energy for a cow when consumed. Its a little more complicated than that, though. There is no such thing as perpetual motion, however. I think the car idea might work on paper but not in practice.

Answer 2

Energy loss is what keeps things from being 100% efficient. No a car cannot run on turbines turned by the wheels exclusively. There is friction that will be an energy loss.

Answer 3

What you are trying to build is what is known as a perpetual motion machine and is impossible to build. A perpetual motion machine results when the action of a machine creates enough energy to continue that action.
Energy loss occurs because energy is released in forms that you cannot control. Even in a perfectly greased ball-berring lubed wheel you lose some energy due to friction which creates heat.
*Also when two substances come in contact with each other, weak forces called Van der waals forces suck up some of the energy.
* Also colliding atoms actually create sound when they collide which dissapates some of the energy.

Answer 4

energy is never lost it is just dissipated, converted to less useful forms.the turbines on the wheels idea is already thought of on one of the toyota or honda cars the battery is charged by the car as the wheels turn but to make the wheels turn u need to push the car first where are u going to get that energy from? ur hands ? i thought of that idea before until i realised a car company had already come up with it.

Answer 5

It depends on how you look at the system. If you consider a control volume, energy loses are usually due to heat or friction, but overall, no energy is lost, it is all interconvertable to some form.