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Author Question: A proton falls through a potential drop of 400 V. How much is the change of potential energy of this ... (Read 14 times)

abern

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on: Jul 29, 2018
A proton falls through a potential drop of 400 V. How much is the change of potential energy of this proton in falling through this potential drop?
 
  A) 6.4  10-16 J
  B) -6.4  10-16 J
  C) 17  10-16 J
  D) -4000 J
  E) 4000 J

Question 2

Which of the following is the correct equation for the momentum of a photon?
 
  A) p = (hc)/
  B) p = /c
  C) p = (hc)/f
  D) p = (hf)/c
  E) p = (h)/c


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CAPTAINAMERICA

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

B

Answer to Question 2

D


abern

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Reply 2 on: Jul 29, 2018
Wow, this really help

duy1981999

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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