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Questions and Answers
Which of the following statements about work is true?
Which of the following statements about work is true?
- Work is the product of mass and acceleration.
- Work is the energy transferred to an object via the application of force.
- Work is the energy transferred to an object via the application of force along a displacement. (correct)
- Work is the product of force and time.
When does a force do positive work?
When does a force do positive work?
- When it has a component in the direction of displacement. (correct)
- When it has a component parallel to the direction of displacement.
- When it has a component opposite to the direction of displacement.
- When it has a component perpendicular to the direction of displacement.
When does a force do negative work?
When does a force do negative work?
- When it has a component parallel to the direction of displacement.
- When it has a component opposite to the direction of displacement. (correct)
- When it has a component in the direction of displacement.
- When it has a component perpendicular to the direction of displacement.
Which of the following is an example of positive work being done?
Which of the following is an example of positive work being done?
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Which of the following is an example of negative work being done?
Which of the following is an example of negative work being done?
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Which planet in the Solar System is made mostly of rock and metal?
Which planet in the Solar System is made mostly of rock and metal?
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Which planets in the Solar System are gas giants?
Which planets in the Solar System are gas giants?
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Which planets in the Solar System are ice giants?
Which planets in the Solar System are ice giants?
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What are the two main elements that make up the gas giants in the Solar System?
What are the two main elements that make up the gas giants in the Solar System?
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What are the two main elements that make up the ice giants in the Solar System?
What are the two main elements that make up the ice giants in the Solar System?
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