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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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Two fixed  navigation  beacons  mark the  approach  lane to a  star. The  beacons are  in line with  the star and  are  40 Mm  apart. A  spaceship  approaches  the star with  a relative  velocity of  0.30 c and  passes the  beacons. The  passage of  the ship  between the  beacons is  timed by  observers on  the beacons.  The time  interval of  the passage  is closest to: 
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1)  _______  A)  4 7 ms  2 50 ms 
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440 ms  D) 
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170 ms  E) 
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420 ms    2) 
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A hydrogen  atom and a  neutron fuse  to form  deuterium. If  the energy  released is    what is the  mass of the  deuterium?  Take the H  atom  nucleus as a  single  proton. 
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2)  _______  A) 
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2.0  ×  10 - 30  kg 
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B)  1.3  × 1
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3.3  ×  10 - 27  kg 
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D)  3.4  × 1   3
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Astronaut  Spud Nick is  space - travelling  from planet  X to planet  Y at a speed  of    When he is  precisely  halfway  between the  planets, a  distance of 1  light - hour  from each,  nuclear  devices are  detonated.  The  explosions  are  simultaneous  in the frame  of the  planets.  What is the  difference in  time of  arrival of the  flashes from  the  explosions  as observed  by Spud? 
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3)  _______  A) 
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150 min 
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B) 
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0 min 
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C) 
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75 min 
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D)  30 0  
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Astronaut  Mark Uri is  space - travelling  from planet  X to planet  Y at a speed  of    When he is  precisely  halfway  between the  planets, a  distance of 1  light - hour  from each,  nuclear  devices are  detonated.  The  explosions  are  simultaneous  in  Mark's  frame. What  is the  difference in  time of  arrival of the  flashes from  the  explosions  as observed  by Mark? 
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4)  _______  A) 
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360 min 
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B) 
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0 min 
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C) 
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90 min 
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D)  18 0  
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 19.00 m  16.16 m   ν =   0.42 c A right - angled  construction  frame ABC,  when  measured at  rest, has  dimensions  as follows:      and    The frame is  given a  velocity of  0.42 c,  relative to  the space  platform, in  a direction  parallel to  AC. The  dimensions  of the  moving  frame are  measured  simultaneous ly by  observers on  the platform.  In the figure,  the length  BC  measured by  these  observers is  closest to: 
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5)  _______  A) 
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This document was uploaded on 04/16/2010.

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