# Work And Power: Question Preview (ID: 12758)

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How much work is done when a very large force is applied to an object but does not move the object? |
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a) none | b) a lot | c) a little | d) The exact amount of work and the weight of the object to figure this out. | |

Which of these is the unit of measure for work? |
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a) watts | b) joules | c) pounds | d) newtons | |

What is the correct formula for work? |
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a) Work= force/time | b) Work= force * distance | c) Work= force/distance | d) Work=mass * acceleration | |

Which of the following in NOT an example of work? |
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a) a windmill turning in the wind | b) a person sliding a box across the floor | c) a metal bar bracing a learning brick wall | d) an air bag deploying in an automobile wreck | |

What is the work done on a 34-N weight if it is lifted up 1 km? |
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a) 17 J | b) 34 J | c) 0.034 J | d) 34,000 J | |

A sailboat weighing 1,960 N moves at 3m/s for 10 minutes. What is the value for the work of the sails? |
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a) 19,600 J | b) 58,800 J | c) 1,176,000 J | d) 3,528,000 J | |

What are the units for power, work, and force? |
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a) Power is measured in watts, work is measured in newtons, and force is measured in joules. | b) Power is measured in newtons, work is measured in watts, and force is measured in joules. | c) Power is measured in watts, work is measured in joules, and force is measured in newtons. | d) Power is measured in joules, work is measured in newtons, and force is measured in m/sec2. | |

What units define a watt? |
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a) joules/meter | b) newtons/meter | c) joules/second | d) newtons/seconds2 | |

What is the correct formula for power? |
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a) Power= work/time | b) Power=work*time | c) Power=force*distance | d) Power=work*distance | |

Power is measured in watts, work is measured in joules, and force is measured in |
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a) Newtons | b) Watts | c) M/s | d) None of the above | |

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