gc textbook chater 14 heat (id: 51a6b5bb6)

本题目来源于试卷: gc textbook chater 14 heat，类别为 IB物理学

[填空题]
(a) How much power is radia-jpe-kk g8m 9wted by a tun-iu6 . ft8ferxgsten sphere (emissivity $e\,=\,0.35$) of radius 22 cm at a temperature of 25$^{\circ} C$ ?    W
(b) If the sphere is enclosed in a room whose walls are kept at -5$^{\circ} C$ what is the net flow rate of energy out of the sphere?    W

参考答案:
空格1: 95±2%  空格2: 33±2% 


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