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Physics Chapter: Understanding Work

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Questions and Answers

What two conditions must be satisfied for work to be done on an object?

A force is applied, and the object stays still.

Energy is transferred, and heat is produced.

No force is applied, and the object is in motion.

A force acts on the object, and the object is displaced. (correct)

What is the scientific definition of work?

A scalar product of energy and distance.

The product of force and displacement when the force acts in the direction of displacement. (correct)

A force times the mass of the object.

The product of force and displacement when the force acts perpendicular to the displacement.

If a force of 7 N is applied to an object but the displacement is perpendicular to the force, what is the work done?

5 Nm

0 Nm (correct)

7 Nm

14 Nm

What unit is used to measure work?

Newton-meter (Nm) or Joule (J) Signup and view all the answers

Which statement about work is true?

Work can be negative. Signup and view all the answers

Which scenario represents a situation where no work is done scientifically?

Holding a heavy suitcase without moving. Signup and view all the answers

What element is crucial for work to be done in a scientific context?

The movement of an object resulting from a force. Signup and view all the answers

Which of the following activities is considered work scientifically?

Climbing a set of stairs. Signup and view all the answers

Why might Kamali feel like she is working hard, yet doing little scientific work?

Most of her activities do not cause displacement. Signup and view all the answers

Physics Chapter: Understanding Work

Choose a study mode

Podcast

Questions and Answers

What two conditions must be satisfied for work to be done on an object?

What is the scientific definition of work?

If a force of 7 N is applied to an object but the displacement is perpendicular to the force, what is the work done?

What unit is used to measure work?

Which statement about work is true?

Which scenario represents a situation where no work is done scientifically?

What element is crucial for work to be done in a scientific context?

Which of the following activities is considered work scientifically?

Why might Kamali feel like she is working hard, yet doing little scientific work?

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