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Biology with MasteringBiologyâ„¢ (8th Edition)

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  MULTIPLE CHOICE.  Choose the one alternative that best completes the statement or answers the question.  1) 
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A child is  sitting on the  outer edge  of a merry - go - round  that is    in diameter.  If the merry - go - round  makes    what is the  velocity of  the child in   
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1)  _______  A) 
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9.2 m/s 
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B) 
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3.2 m/s 
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C) 
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4.6 m/s 
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D)  0. 7  
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Through  what angle  in degrees  does a    record turn  in   
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2)  _______  A) 
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63° 
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B) 
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35° 
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C) 
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74° 
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D)  46 °  
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An electrical  motor spins  at a constant    If the  armature  radius is    what is the  acceleration  of the edge  of the rotor? 
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3)  _______  A) 
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5707 m/s
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B)  281.6  m
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28.20 m/s
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D)  572,400  m   4
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At time t  = 0 s, a wheel  has an  angular  displacement  of zero  radians and  an angular  velocity of    The wheel  has a  constant  acceleration  of    In this  situation, the  time t, at  which the  wheel comes  to a  mandatory  halt, is  closest to: 
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4)  _______  A) 
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130 s 
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B) 
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96 s 
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C) 
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78 s 
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