Q1) If the amount of heat needed for 3kg of a material for a phase change is 300kJ, calculate the specific latent heat of 5 kg of that material. Show the work out. Q2) A metal block of mass 500g is heated from 30⁰C to 230⁰C, an electric heater was used for 2 minutes to raise the temperature of the block. The specific heat capacity of the metal is 0.5J/g⁰C. Find the power rating of the heater.
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6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.
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Q1) If the amount of heat needed for 3kg of a material for a phase change is 300kJ, calculate the sp...
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