(a) (i) Calculate the final temperature of the coffee and Al block when the system comes to equilibrium? (ii) In order the check your answer in (i) also calculate the amount of heat that will flow from the coffee as well as the amount of heat taken up by the aluminium. (iii) Assume that it takes three minutes for this system to come into equilibrium. Calculate the average rate of heat flow over this time ? (iv) Do you expect the rate of heat flow calculated in (ii) above to be constant during the three minutes ? Explain your answer and make a sketch of the expected heat flow over time to illustrate your answer. (b) However, it may not be the best idea to drop a block of cold aluminium in your coffee every morning. An alternative is to drop an ice block of exactly the same dimensions into the coffee.

(a) (i) Calculate the final temperature of the coffee and Al block when the system comes to equilibrium? (ii) In order the check your answer in (i) also calculate the amount of heat that will flow from the coffee as well as the amount of heat taken up by the aluminium. (iii) Assume that it takes three minutes for this system to come into equilibrium. Calculate the average rate of heat flow over this time ? (iv) Do you expect the rate of heat flow calculated in (ii) above to be constant during the three minutes ? Explain your answer and make a sketch of the expected heat flow over time to illustrate your answer. (b) However, it may not be the best idea to drop a block of cold aluminium in your coffee every morning. An alternative is to drop an ice block of exactly the same dimensions into the coffee.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter14: Heat And Heat Transfer Methods

Section: Chapter Questions

Problem 42PE: (a) Calculate the rate of heat conduction through a double-paned window that has a 1.50m3 area and...

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