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Author Question: An atomic nucleus has a charge of +40e. An electron is 10-9 m from the nucleus. What is the force on ... (Read 119 times)

strangeaffliction

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on: Jul 29, 2018
An atomic nucleus has a charge of +40e. An electron is 10-9 m from the nucleus. What is the force on the electron?
 
  A)
 
  2.9 nN
  B)
 
  1000 C
  C)
 
  3.7 nN
  D)
 
  6.8 nN
  E)
 
  9.2 nN

Question 2

State how to draw the three rays for finding the image position due to a curved mirror.
 
  What will be an ideal response?


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elizabethrperez

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

E

Answer to Question 2

Ray 1 leaves the top of the object and is drawn such that it is parallel to the axis; therefore after reflection it must pass along a line through the focal point.
Ray 2 leaves the top of the object and is made to pass through the focal point; therefore it must reflect so it is parallel to the axis.
Ray 3 leaves the top of the object and is made to pass through the center of curvature; therefore it must reflect back on itself.


strangeaffliction

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Reply 2 on: Jul 29, 2018
Gracias!

upturnedfurball

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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