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 takeIf this were a Carnot Refrigerator, what would be the temperature of your kitchen?

Answered: After watching a food hack video on…

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 60^oC.

If the temperature inside your freezer is -15^oC, 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 -5^oC?
c_water = 4186 J/kg*^oC; c_ice = 2090 J/kg*^oC; L_steam = 2.26 x 10⁶ J/kg; L_ice = 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?

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