The food we eat in one day has about the same energy as:
Correct answer: A. 0.33 litre of petrol
- A. 0.33 litre of petrol
- B. 1 litre of petrol
- C. 0.5 litre of petrol
- D. 2 litre of petrol
Explanation
The food we eat in one day has about the same energy as 0.33 litre of petrol.
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Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
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