Physics, 21.12.2019 02:31 unicornturd
In usa, butter is generally sold by pounds, with four sticks per pound and each stick being 11.45 cm in length.
(a) if each stick is in the shape of a rectangle with square cross-section, find the dimensions of each stick (cm). for butter: k 1⁄4 0.2 w/(m k); r 1⁄4 998 kg/m3 ; cp 1⁄4 2,300 j/(kg k).
(b) suppose that a stick of butter is maintained for a week at 280 k. it is then placed in the surroundings at room temperature (293 k) so that all the six sides are exposed to air with h 1⁄4 8 w/(m2 k). find the temperature (k) at the center of a single stick after 1 h.
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In usa, butter is generally sold by pounds, with four sticks per pound and each stick being 11.45 cm...
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