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 m₂ = 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 = Pt. Please use for the specific enthalpy of evaporation h₁ = 2260 and heat capacity of water values cp = 4.1900 k kg What is the Percentage of electric energy transferred to water? EP = 1 % Insert only 3 most significant digits of your answer without rounding. Quantity Symbol Total mass of water Mass of water that evaporates Power of electric heater Heating time Percentage of electric energy transferred to water Initial temperature of water Boiling point of water Specific enthalpy of vaporization for water EA-BEEZ MAN m me P t EP T₁ Tb he Specific heat capacity of liquid water Electric energy consumed by the electric heater Energy needed to heat the water to its boiling point and to evaporate part of it Ew Cp En Unit kg W min % K K kJ kg kJ kgK J J Input instruction m m_e P t EP T_1 T_b h_f c_p E_h E_W

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 m₂ = 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 = Pt. Please use for the specific enthalpy of evaporation h₁ = 2260 and heat capacity of water values cp = 4.1900 k kg What is the Percentage of electric energy transferred to water? EP = 1 % Insert only 3 most significant digits of your answer without rounding. Quantity Symbol Total mass of water Mass of water that evaporates Power of electric heater Heating time Percentage of electric energy transferred to water Initial temperature of water Boiling point of water Specific enthalpy of vaporization for water EA-BEEZ MAN m me P t EP T₁ Tb he Specific heat capacity of liquid water Electric energy consumed by the electric heater Energy needed to heat the water to its boiling point and to evaporate part of it Ew Cp En Unit kg W min % K K kJ kg kJ kgK J J Input instruction m m_e P t EP T_1 T_b h_f c_p E_h E_W

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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