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Author Question: A beam of protons is sent through a target and 60 get through. If the target then has its thickness ... (Read 116 times)

Tazate

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on: Jul 29, 2018
A beam of protons is sent through a target and 60 get through. If the target then has its thickness doubled, what percent of the beam would then get through?
 
  A)
 
  20
  B)
 
  36
  C)
 
  40
  D)
 
  60
  E)
 
  80

Question 2

In an electron two-slit experiment, the slits are 15 m apart. If the first diffraction maximum lies at an angle of 5.0  10-7 rad, what is the momentum of the incoming electrons?
 
  A)
 
  4.4  10-23 kgm/s
  B)
 
  2.2  10-23 kgm/s
  C)
 
  11  10-23 kgm/s
  D)
 
  6.6  10-23 kgm/s
  E)
 
  8.8  10-23 kgm/s


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wshriver

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

B

Answer to Question 2

E


Tazate

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


wshriver

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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