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After watching a food hack video on Facebook, you decide to make some ‘coffee ice cubes’ by freezing your leftover morning coffee, which is sitting on the warmer at 60oC. If the temperature inside your freezer is -15oC, how much heat energy would need to be removed from 0.25 kg of coffee if we assume it behaves like water EXCEPT that the freezing point has been lowered to -5oC?cwater = 4186 J/kg*oC; cice = 2090 J/kg*oC; Lsteam = 2.26 x 106 J/kg; Lice = 3.33 x 105 J; If the refrigerator operates with a COP of 8.5 and draws 25 W of power to do this, how long would this take If this were a Carnot Refrigerator, what would be the temperature of your kitchen?

After watching a food hack video on Facebook, you decide to make some ‘coffee ice cubes’ by freezing your leftover morning coffee, which is sitting on the warmer at 60oC. If the temperature inside your freezer is -15oC, how much heat energy would need to be removed from 0.25 kg of coffee if we assume it behaves like water EXCEPT that the freezing point has been lowered to -5oC?cwater = 4186 J/kg*oC; cice = 2090 J/kg*oC; Lsteam = 2.26 x 106 J/kg; Lice = 3.33 x 105 J; If the refrigerator operates with a COP of 8.5 and draws 25 W of power to do this, how long would this take If this were a Carnot Refrigerator, what would be the temperature of your kitchen?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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After watching a food hack video on Facebook, you decide to make some ‘coffee ice cubes’ by freezing your leftover morning coffee, which is sitting on the warmer at 60oC.

  1. If the temperature inside your freezer is -15oC, how much heat energy would need to be removed from 0.25 kg of coffee if we assume it behaves like water EXCEPT that the freezing point has been lowered to -5oC?
    cwater = 4186 J/kg*oC; cice = 2090 J/kg*oC; Lsteam = 2.26 x 106 J/kg; Lice = 3.33 x 105 J;

  2. If the refrigerator operates with a COP of 8.5 and draws 25 W of power to do this, how long would this take

  3. If this were a Carnot Refrigerator, what would be the temperature of your kitchen?

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