The water in the hand pump is hot in winter because water comes out from inside and absorbs heat from the surroundings. As the water travels through pipes underground, it absorbs heat from the relatively warmer Earth. Consequently, when pumped ...
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The water in the hand pump is hot in winter because water comes out from inside and absorbs heat from the surroundings. As the water travels through pipes underground, it absorbs heat from the relatively warmer Earth. Consequently, when pumped ...