Question

1. The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 14.9 W . HooRU's surface area is 1.53 m2 and the emissivity of its surface is 0.231 . Ignore the radiation HooRU absorbs from the cold universe. What is HooRU's temperature?

2.

Find the net rate of radiation by a pot at 34.7 ∘Cthat has been placed in a 25.1 ∘C freezer. The pot's surface area is 0.131 m2 and its emissivity is 0.679

Answer 1

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