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Author Question: Calculate the reaction energy (Q value) for the reaction 7Li + 1H 4He + 4He, given the following ... (Read 69 times)

cdr_15

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on: Jul 29, 2018
Calculate the reaction energy (Q value) for the reaction 7Li + 1H  4He + 4He, given the following masses:
  7Li: 7.016005 u
  1H: 1.007825 u
  4He: 4.002603 u
  (1 u = 931.5 MeV/c2)
 
  A) 15.37 MeV B) 17.35 MeV C) 17.53 MeV D) 13.57 MeV E) 13.35 MeV

Question 2

A 4.00-kg mass and a 9.00-kg mass are being held at rest against a compressed spring on a frictionless surface.
 
  When the masses are released, the 4.00-kg mass moves to the east with a speed of 2.00 m/s. What is the velocity of the 9.00-kg mass after the masses are released?
  A)
 
  2.00 m/s west
  B)
 
  0.888 m/s west
  C)
 
  0.500 m/s east
  D)
 
  4.50 m/s west
  E)
 
  0.500 m/s west


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Joy Chen

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

B


cdr_15

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

miss.ashley

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Reply 3 on: Yesterday
:D TYSM

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