Question

In a coal-burning power plant, the motion of crushed coal is used to spin the blades of a turbine
true or false
my answer true

Answer 1

I would think that the energy comes from burning the coal... Right?

Answer 2

yeah

Answer 3

So, the moving coal isn't the energy source. To get the coal to move, you'd need to put energy into it anyway! So that's not the best plan. Better to use it's chemical potential energy (not like the kinetic kind of potential energy).

With a dam, the water moves to the dam on its own. We don't have to put our work into it. That's why it's efficient to use it's potential energy. We didn't have to give it the potential energy.

Answer 4

so its false

Answer 5

I'll let you decide!