How trapped thermal energy affects process of star formation
What happens to a contracting cloud when its thermal energy can no longer escape the cloud's interior in the form of photons? How does the trapped thermal energy affect the process of star formation?
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A heavy piece of hanging sculpture is suspended by a 92 cm long, 4.2 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80 Hz. What is the mass of the sculpture?
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