1. The dust in a molecular cloud has a temperature of about 50 K. At what wavelength does it emit… 1 answer below »

1. The dust in a molecular cloud has a temperature of about 50 K. At what wavelength does it emit the maximum energy? (Hint: Use Wien’s law, Chapter 6.) 2. A giant molecular cloud is 30 pc in diameter and has a density of 1000 hydrogen atoms/cm3 . What is its total mass in kilograms? (Hints: The volume of a sphere is 4 3pr 3 , and the mass of a hydrogen atom is 1.67 × 10-27 kg.)  

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