Complete Question
A certain refrigerator, operating between temperatures of -8.00°C and +23.2°C, can be approximated as a Carnot refrigerator.
What is the refrigerator's coefficient of performance? COP
(b) What If? What would be the coefficient of performance if the refrigerator (operating between the same temperatures) was instead used as a heat pump? COP
Answer:
a
![COP = 8.49](https://tex.z-dn.net/?f=COP%20%3D%208.49)
b
Explanation:
From the question we are told that
The lower operation temperature of refrigerator is
The upper operation temperature of the refrigerator is ![T_2 = 23.2 ^oC = 296.2 \ K](https://tex.z-dn.net/?f=T_2%20%3D%20%2023.2%20%5EoC%20%3D%20%20296.2%20%5C%20%20K)
Generally the refrigerators coefficient of performance is mathematically represented as
![COP = \frac{T_1}{T_2 - T_1 }](https://tex.z-dn.net/?f=COP%20%3D%20%20%5Cfrac%7BT_1%7D%7BT_2%20-%20T_1%20%20%7D)
=> ![COP = \frac{265}{296.2 - 265 }](https://tex.z-dn.net/?f=COP%20%3D%20%20%5Cfrac%7B265%7D%7B296.2%20-%20265%20%20%7D)
=> ![COP = 8.49](https://tex.z-dn.net/?f=COP%20%3D%208.49)
Generally if a refrigerator (operating between the same temperatures) was instead used as a heat pump , the coefficient of performance is mathematically represented as
=>
=>
<span>B.Extrinsic motivation </span>
The mass affects the kinetic energy because the more the mass the more energy is given to the object and the speed<span> affects by making it go faster and longer, so whenever speed goes up so does energy.</span>
3 times 6= 18. The average speed is 19 mph.
hope this helps!