While turning the turbines the amount of water which is going inside is equal to amount of water comming out, but still electricity is produced which is made up of electrons. so definitely law of conservation of mass should be wrong. Then still why do we practice it?
2007-08-29 02:49:17 · 2 answers · asked by Amogha c 1 in Science & Mathematics ➔ Chemistry
A waterwheel is a great example of how different types of energy are exchanged. Flowing water possesses kinetic energy the varies with the square of its velocity (KE = 0.5*mv^2) and gravitational potential energy that depends on elevation (GPE = mgh); both types of energy also have a linear dependence on mass. Water usually passes over a waterwheel that is embedded in a waterfall, but may also be immersed in an area of level flow. After the water passes over the wheel, the water has some new amount of KE and GPE, and the sum should be less than the sum of the original KE and GPE. The difference in total energy represents the energy that was lost to the waterwheel, and the energy generated is equal to this difference times the efficiency of the wheel. Note that is is possible for the water to flow more slowly exiting the wheel than entering, as long as the water flows through a greater cross-section to maintain volumetric flow rate. There is no violation of conservation of mass or energy.
2007-08-29 04:22:21 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
the electrons produced are not simply created out of thin air they are produced out of things that already exist so that the total mass and energy in the universe is always conserved. the conservation laws can never be wrong.
2007-08-29 09:56:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋