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Here are the answers to EXAM REVIEW #4.

 

 

  1. .
    1. 4.0 m/s
    2. 2.8 m/s
  2. (a) 570 meters is horizontal range (b) 84 m/s  at 31 degrees below horizontal
  3. .
    1. 34 N [up]
    2. 34 N [down]
    3. 20 N [up]
  4. .
    1. 0.39 Hz
    2. 3.9 N [up]
  5. coefficient of friction is 2.0
  6. 5.65 m/s
  7. 14 m/s
  8. 9.1 N/kg
  9. .          
    1. upper is +, bottom plate is negative and sphere is negative
    2. 2.9 EE-18 Coloumbs
    3. 18 electrons excess
  10. 68 cm
  11. 7.2 EE -7 m       red  light
  12. 1.0 EE7 N/C [right]
  13. 30.74 kBq
  14. 9.32 EE -8  m
  15. 3.29 EE 23 kg
  16. 1.32 EE 15 Hz
  17. 160 m/s