A hollow sphere and a hollow cube, both made of the same metal, have the same surface area and negligible thickness. They are filled with warm water of the same temperature and placed in an enclosure

Question

A hollow sphere and a hollow cube, both made of the same metal, have the same surface area and negligible thickness. They are filled with warm water of the same temperature and placed in an enclosure of constant temperature, a few degrees below that of water. Then at the beginning the rate of:

TestHub · Accepted Answer

Equal area and equal emissivity give equal energy loss (C). For a given surface area the sphere encloses the larger volume, so more water, so a slower fall of temperature (D is true as stated). Options C and D.

Physics - Heat & Thermo Question with Solution | TestHub

Options:(select one or more)

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