Multiple Choice
If a space heater consisted of a 10.0 cm radius iron ball through which electrical current was passed in order to heat the ball,what temperature would it need to be raised to in order to radiate 500 W into the surrounding air (which is at a temperature of 20 C? Assume the ball is a perfect blackbody.
A) 510 K
B) 346 K
C) 730 K
D) 530 K
Correct Answer:

Verified
Correct Answer:
Verified
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