A coal-fired power station generates electricity. Coal is burnt and the energy released is used to boil water. The steam from the water makes the generator move and this produces electricity. What energy stored in coal?
Chemical Potential Energy
A coal-fired power station generates electricity. Coal is burnt and the energy released is used to boil water. The steam from the water makes the generator move and this produces electricity. What energy in moving generator?
Kinetic Energy
A skier walks from the bottom of a ski slope to the top and gains 10 000 J of gravitational potential energy. She skis down the slope. At the bottom of the slope, her kinetic energy is 2000 J. How much energy is dissipated?
80000 J or 80 kJ
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