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10 Questions

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Physics Chapter: Work, Energy and Power

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Questions and Answers

What concept is closely related to 'work' according to the text?

Motion

Gravitation

Power

Energy (correct)

Why do living beings and machines need energy?

To perform activities and work (correct)

To relax and sleep

To prepare for examinations

To study and learn

What are examples of strenuous activities that require more energy according to the text?

Thinking, jumping, cycling

Eating, sleeping, sitting

Playing, singing, reading

Jumping, running, fighting (correct)

What is the source of energy for all living beings according to the text?

Food Signup and view all the answers

Why do some engines require fuel like petrol and diesel?

To provide energy for work Signup and view all the answers

According to the scientific definition of work, which scenario does NOT involve work?

Pushing a rock that doesn't move Signup and view all the answers

Which of the following activities may NOT be considered as 'work' in day-to-day life?

Performing experiments Signup and view all the answers

What determines whether an activity is considered 'work'?

Whether there is displacement involved Signup and view all the answers

What is an example of an activity that involves 'work' based on the scientific definition?

Climbing up a tall tree Signup and view all the answers

In what context do we define and use the term 'work' differently?

In day-to-day life Signup and view all the answers