An astronaut in the space shuttle has two objects that are

Chapter 13, Problem 13.35

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An astronaut in the space shuttle 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 (b) The object painted silver (c) Both objects cool down at the same rate. (d) It is not possible to determine which object cools down at the faster rate. 11. The emissivity e of object B is that of object A, although both objects are identical in size and shape. If the objects radiate the same energy per second, what is the ratio TB/TA of their Kelvin temperatures? (a) (b) (c) (d) 2 (e) 4