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Question: 

Estimate the peak wavelength for radiation emitted from

  1. ice at $0 ^\circ \textrm{C}$,
  2. a floodlamp at 3100 K,
  3. helium at 4 K, assuming blackbody emission. In what region of the EM spectrum is each?

Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014. Reprinted by permission of Pearson Education Inc., New York.
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Quick Answer: 
  1. $10.6 \; \mu m \textrm{, infrared}$
  2. $940 \textrm{ nm, near infrared}$
  3. $0.73 \textrm{ mm, microwave}$

Giancoli 7th Edition, Chapter 27, Problem 5

(1:37)

Chapter 27, Problem 5 is solved.

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