Answer:
Option D 3.9
Explanation:
First, you need to use the correct equation which is the following:
COP = Q/W
Where:
Q = heat absorbed
W = work done by the pump
COP = coefficient of perfomance
We have all the data, so, all you need to do is replace in the above expression and you shoould get the correct result:
COP = 30 / 7.7
COP = 3.896
This result you can round it to 3.9. option D.
A material that does not conduct electricity is known as an insulator
As oil ,coal ,gas ,solar ,wind and water power
By the help of newtons law of gravitation we can derive keplers third law of planetary motion.
