A beam of protons is sent through a target and 60 get through. If ...

[Tazate]

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

[wshriver]

Answer to Question 1

B

Answer to Question 2

E

[Tazate]

Both answers were spot on, thank you once again

[wshriver]

Great! Please up vote