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Physics, 25.11.2020 14:00 paralaw61772
Pentru încălzirea apei (c apă = 4 180 J/kg·K) cu Δt = 80 °C se folosește o instalație de
încălzire în care se arde o masă m = 6,2 g de alcool etilic, cu puterea calorică q = 27
MJ/kg. Știind că pierderile de căldură sunt de 40%, determină masa de apă care a
fost încălzită.
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Pentru încălzirea apei (c apă = 4 180 J/kg·K) cu Δt = 80 °C se folosește o instalație de
încălzire...
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