ch18-p066 - 66. The condition that the energy lost by the...

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With env 32 C 305 K T =°= , 15 C 288 K T and 1 ε = , the rate of water mass loss is 82 4 2 2 44 env 6 7 (5.67 10 W/m K )(1.0)(1.53 10 m ) ( ) (305 K) (288 K) 2.256 10 J/kg 6.82 10 kg/s 0.68 mg/s. V dm A TT dt L σε −− ×⋅ × ªº =− = ¬¼ × 66. The condition that the energy lost by the beverage can due to evaporation equals the
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