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Author Question: What are the wavelength and the corresponding photon energy (in electron-volts) of the primary light ... (Read 145 times)

kwoodring

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on: Jul 29, 2018
What are the wavelength and the corresponding photon energy (in electron-volts) of the primary light emitted by an ideal blackbody at each of the following temperatures?
 
  (c = 3.00  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.60  10-19 J, and the constant in Wein's law is 0.00290 m  K)
  (a) 400C?
  (b) 800C?
  (c) 1200C?

Question 2

A Hertzsprung-Russell diagram shows stars on a plot of
 
  A) luminosity vs. distance. B) magnitude vs. apparent brightness.
  C) apparent brightness vs. temperature. D) luminosity vs. temperature.


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Natalie4ever

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

(a) 4.31 m, 0.288 eV (b) 2.70 m, 0.459 eV (c) 1.97 m, 0.631 eV

Answer to Question 2

D


kwoodring

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Reply #2 on: Jul 29, 2018
Thanks


Natalie4ever

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Reply #3 on: Jul 29, 2018
Welcome :)


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