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Author Question: In Heisenberg's formula, p x h, the h symbolizes A) Planck's constant. B) an average value of ... (Read 62 times)

MirandaLo

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on: Jul 29, 2018
In Heisenberg's formula, p x h, the h symbolizes
 
  A) Planck's constant.
  B) an average value of Planck's constant.
  C) the peak value of Planck's constant.
  D) Planck's constant divided by 2.
  E) none of the above

Question 2

The filament in a light bulb has a diameter of 0.050 mm and an emissivity e = 1.0.
 
  The temperature of the filament is 3000C. How long should the filament be in order to radiate 60 W of power? The Stefan-Boltzmann constant is 5.67 x 10-8 W/(m2K4).
  A) 11 cm
  B) 9.4 cm
  C) 8.6 cm
  D) 7.2 cm
  E) 5.9 cm


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parshano

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

Answer: D

Answer to Question 2

E


MirandaLo

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Reply #2 on: Jul 29, 2018
Thank you!


parshano

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Reply #3 on: Jul 29, 2018
Always glad to help...


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