m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min . During this time the temperature of the water rises from T₁ = 335 K to its boiling point and me = 176 g of water evaporates. How much of the electric energy used by the heater is transferred to the water during the heating? Please consider that produced energy can be obtained by the product of power and time, so E = P t. Please use for the specific enthalpy of evaporation h = 2260 kJ and heat capacity of water values cp = 4.1900 kgk What is the Percentage of electric energy transferred to water? EP %

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min
. During this time the temperature of the water rises from T₁ = 335 K to its
boiling point and me = 176 g of water evaporates. How much of the electric
energy used by the heater is transferred to the water during the heating? Please
consider that produced energy can be obtained by the product of power and
time, so E = P t. Please use for the specific enthalpy of evaporation hf = 2260
and heat capacity of water values cp = 4.1900
kJ
kgK
What is the Percentage of electric energy transferred to water?
EP =
%
Transcribed Image Text:m = 0.9000 kg of water is heated with P = 481 W electric heater for t = 39 min . During this time the temperature of the water rises from T₁ = 335 K to its boiling point and me = 176 g of water evaporates. How much of the electric energy used by the heater is transferred to the water during the heating? Please consider that produced energy can be obtained by the product of power and time, so E = P t. Please use for the specific enthalpy of evaporation hf = 2260 and heat capacity of water values cp = 4.1900 kJ kgK What is the Percentage of electric energy transferred to water? EP = %
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