Questions and Answers
Why do living beings and machines need energy?
To perform life processes and activities
What is the relationship between work, energy, and power?
Work is the same as energy, while power is the rate of doing work
Why do some engines require fuel like petrol and diesel?
To release energy that can be converted into useful work
Why are strenuous activities by living beings or animals more energy-consuming?
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According to the scientific definition of work, which scenario describes doing work?
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In the context of science, why is pushing a huge rock that does not move not considered as doing work?
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Which of the following activities is considered work in day-to-day life but may not involve work according to science?
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What does the text suggest about the concept of 'work' in science and everyday life?
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Why might climbing up the steps of a staircase be considered as doing work according to science?
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Which activity would most likely be classified as 'work' based on both scientific and day-to-day life definitions?
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