Work is the dot product of force and displacement. This means that a force acting in the direction of motion will do positive work. The same applies for a force acting in opposite direction will do net negative work.
Coefficient of performance or more commonly known as COP is calculated through the equation, COP = ((T₂)/(T₂ - T₁)) where T₂ is the hot temperature and T₁ is the cold temperature. Similarly, these can also be, COP = heat ejected / (heat ejected - heat provided) Substituting, COP = 22,000 / (22,000 - 15,000) = 3.14 Thus, the value of the COP is approximately 3.14.
