Radiation: a Cube at 100

question 56

Multiple Choice

Radiation: A cube at 100.0°C radiates heat at a rate of 80.0 J/s. If the length of each side is cut in half, the rate at which it will now radiate is closest to

• A) 56.6 J/s.
• B) 40.0 J/s.
• C) 28.3 J/s.
• D) 20.0 J/s.
• E) 10.0 J/s.

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