What Is the Net Power Radiated by a Little Animal $0.075 \mathrm {~m} ^ { 2 }$

question 51

Multiple Choice

What is the net power radiated by a little animal with a surface area of $0.075 \mathrm {~m} ^ { 2 }$ if his emissivity is 0.75 , his skin temperature is 315 K, and he is in a room with a temperature of 290 K? $( \sigma = 5.67 \times$ $\left. 10 ^ { - 8 } \mathrm {~W} / \mathrm { m } ^ { 2 } \cdot \mathrm { K } ^ { 4 } \right)$

• A) 6.0 W
• B) 8.8 W
• C) 15 W
• D) 18 W
• E) 8.0 W

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