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Water is boiled at sea level in a coffeemaker equipped with an immersion-type electric heating element. The coffeemaker contains 1 L of water when full. Once boiling starts, it is observed that half of the water in the coffeemaker evaporates in 13.00 min. Determine the power rating of the electric heating element immersed in water. Also, determine how long it will take for this heater to raise the temperature of 1 L of cold water from 18°C to the boiling temperature. The enthalpy of vaporization of water at the saturation temperature of 100°C is hig 2256.4 kJ/kg. At an average temperature of (100+18)/2 = 59°C, the specific heat of water is c= 4.18 kJ/kg.°C and the density is about 1 kg/L. (Round the final answer to three decimal places.) 1 atm Coffee maker 1L The power rating of the electric heating element is 1.446 KW It will take 3.950 min to raise the temperature of this water to the boiling temperature.

Water is boiled at sea level in a coffeemaker equipped with an immersion-type electric heating element. The coffeemaker contains 1 L of water when full. Once boiling starts, it is observed that half of the water in the coffeemaker evaporates in 13.00 min. Determine the power rating of the electric heating element immersed in water. Also, determine how long it will take for this heater to raise the temperature of 1 L of cold water from 18°C to the boiling temperature. The enthalpy of vaporization of water at the saturation temperature of 100°C is hig 2256.4 kJ/kg. At an average temperature of (100+18)/2 = 59°C, the specific heat of water is c= 4.18 kJ/kg.°C and the density is about 1 kg/L. (Round the final answer to three decimal places.) 1 atm Coffee maker 1L The power rating of the electric heating element is 1.446 KW It will take 3.950 min to raise the temperature of this water to the boiling temperature.

Elements Of Electromagnetics
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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Water is boiled at sea level in a coffeemaker equipped with an immersion-type electric heating element. The coffeemaker contains 1 L of water when full. Once boiling starts, it is observed that half of the water in the coffeemaker evaporates in 13.00 min. Determine the power rating of the electric heating element immersed in water. Also, determine how long it will take for this heater to raise the temperature of 1 L of cold water from 18°C to the boiling temperature. The enthalpy of vaporization of water at the saturation temperature of 100°C is hig 2256.4 kJ/kg. At an average temperature of (100+18)/2 = 59°C, the specific heat of water is c= 4.18 kJ/kg.°C and the density is about 1 kg/L. (Round the final answer to three decimal places.) 1 atm Coffee maker 1L The power rating of the electric heating element is 1.446 KW It will take 3.950 min to raise the temperature of this water to the boiling temperature.
Transcribed Image Text:Water is boiled at sea level in a coffeemaker equipped with an immersion-type electric heating element. The coffeemaker contains 1 L of water when full. Once boiling starts, it is observed that half of the water in the coffeemaker evaporates in 13.00 min. Determine the power rating of the electric heating element immersed in water. Also, determine how long it will take for this heater to raise the temperature of 1 L of cold water from 18°C to the boiling temperature. The enthalpy of vaporization of water at the saturation temperature of 100°C is hig 2256.4 kJ/kg. At an average temperature of (100+18)/2 = 59°C, the specific heat of water is c= 4.18 kJ/kg.°C and the density is about 1 kg/L. (Round the final answer to three decimal places.) 1 atm Coffee maker 1L The power rating of the electric heating element is 1.446 KW It will take 3.950 min to raise the temperature of this water to the boiling temperature.
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