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Author Question: A parallel-plate capacitor has a plate separation of 5.0 cm. If the potential difference between the ... (Read 154 times)

jazziefee

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on: Jul 29, 2018
A parallel-plate capacitor has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates?
 
  A)
 
  100 N/C upward
  B)
 
  100 N/C downward
  C)
 
  4000 N/C downward
  D)
 
  40000 N/C upward
  E)
 
  40000 N/C downward

Question 2

White light is incident normally on a thin soap film having an index of refraction of 1.34. It reflects with an interference maximum at 684 nm and an interference minimum at 570 nm with no minima between those two values.
 
  The film has air on both sides of it. What is the thickness of the soap film?
  A) 766 nm B) 894 nm C) 627 nm D) 638 nm E) 510 nm


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tuate

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

E

Answer to Question 2

D


jazziefee

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Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

rachel

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Reply 3 on: Yesterday
Gracias!

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