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19 September, 20:19

An astronaut has two objects that are identical in all respects, except that one is painted black and the other is painted silver. Initially, they are at the same temperature. When taken from inside the Space Shuttle and placed in outer space, which object, if either, cools down at a faster rate?

A) The object painted black Both objects cool down at the same rate.

B) The object painted silver It is not possible to determine which object cools down at the faster rate.

C) The object painted black Both objects cool down at the same rate.

D) The object painted silverIt is not possible to determine which object cools down at the faster rate.

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  1. 19 September, 20:44
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    Answer:black object cools down faster

    Explanation: in the space heat transference through radiation. Black objects have more emissivity. Emissivity depends on surface materials properties and very specific on the surface color. Emissivity is close to one for black objects.
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