A glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input. (a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 55.3°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C). (b) If the temperature of the coffee remains constant and all of the heat input is removed by evaporation, how many grams per minute evaporate? Take the latent heat of vaporization to be 560 cal/g.
A glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input. (a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 55.3°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C). (b) If the temperature of the coffee remains constant and all of the heat input is removed by evaporation, how many grams per minute evaporate? Take the latent heat of vaporization to be 560 cal/g.
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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A glass coffee pot has a 9.00 cm diameter circular bottom in contact with a heating element that keeps the coffee warm with a continuous 50.0-W heat input.
(a) What is the temperature of the bottom of the pot, if it is 2.90 mm thick and the inside temperature is 55.3°C? The thermal conductivity of the pot is 0.84 J/(s · m · °C).
(b) If the temperature of the coffee remains constant and all of the heat input is removed by evaporation, how many grams per minute evaporate? Take the latent heat of vaporization to be 560 cal/g.
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