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Author Question: What is the wavelength of a photon having energy 2.00 eV? (c = 3.00 108 m/s, h = 6.626 10-34 J s, ... (Read 17 times)

casperchen82

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on: Jul 29, 2018
What is the wavelength of a photon having energy 2.00 eV? (c = 3.00  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J)
 
  What will be an ideal response?

Question 2

A +3.0-C point charge is initially extremely far from a positive point charge Q. You find that it takes 41 J of work to bring the +3.0-C charge to the point x = 3.0 mm, y = 0.0 mm and the point charge Q to the point x = -3.0 mm, y = 0.00 mm.
 
  What is Q? (k = ) A) 55 nC
  B) 9.1 C
  C) 4.6 C
  D) 27 pC


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onowka

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

621 nm

Answer to Question 2

B


casperchen82

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

cam1229

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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