Answer:
a) ![\dot W = 1.062\,kW](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%201.062%5C%2CkW)
Explanation:
a) Let consider that heat pump is reversible, so that the Coefficient of Performance is:
![COP_{HP} = \frac{T_{H}}{T_{H}-T_{L}}](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%20%5Cfrac%7BT_%7BH%7D%7D%7BT_%7BH%7D-T_%7BL%7D%7D)
![COP_{HP} = \frac{298.15\,K}{298.15\,K-279.15\,K}](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%20%5Cfrac%7B298.15%5C%2CK%7D%7B298.15%5C%2CK-279.15%5C%2CK%7D)
![COP_{HP} = 15.692](https://tex.z-dn.net/?f=COP_%7BHP%7D%20%3D%2015.692)
The minimum heat received by the house must be equal to the heat lost to keep the average temperature constant. Hence:
![\dot Q_{H} = 60000\,\frac{kJ}{h}](https://tex.z-dn.net/?f=%5Cdot%20Q_%7BH%7D%20%3D%2060000%5C%2C%5Cfrac%7BkJ%7D%7Bh%7D)
The minimum power supplied to the heat pump is:
![\dot W = \frac{\dot Q_{H}}{COP}](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%20%5Cfrac%7B%5Cdot%20Q_%7BH%7D%7D%7BCOP%7D)
![\dot W = \frac{\left(60000\,\frac{kJ}{h} \right)\cdot \left(\frac{1\,h}{3600\,s} \right)}{15.692}](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%20%5Cfrac%7B%5Cleft%2860000%5C%2C%5Cfrac%7BkJ%7D%7Bh%7D%20%20%5Cright%29%5Ccdot%20%5Cleft%28%5Cfrac%7B1%5C%2Ch%7D%7B3600%5C%2Cs%7D%20%20%5Cright%29%7D%7B15.692%7D)
![\dot W = 1.062\,kW](https://tex.z-dn.net/?f=%5Cdot%20W%20%3D%201.062%5C%2CkW)
Answer:
False
Explanation:
When you're studying, you need to make sure that you can focus properly. This means that you shouldn't be hungry or too full and that you should be well-rested, in a quiet room with good lighting and no distractions. Noise is never good when you need to memorize something. Some people can partially ignore it as long as it isn't too loud, but it will begin to bother them eventually. That's why it's better to study in a quiet room.
Answer:
pls put a question not random letters
Explanation:
Hello there,
In the problems given in the question, the driver's license is confiscated and suspended.
So our answer is: A)
Achievements.