Coal and petrol are stores of chemical energy when are burnt, chemical energy is converted into heat energy i.e chemical energy = heat energy + _:
Correct answer: B. Losses
- A. Electrical energy
- B. Losses
- C. Gains
- D. Wind energy
- E. Nothing
Explanation
When coal or petrol is burnt chemical energy stored in it is converted to heat energy and some of it is lost to the surrounding.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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