With a refrigerator you pay for the work, and what you get is heat removal. the 'coefficient of performance' of a refrigerator is then defined to be the heat removed from the cold region divided by the work used. what is the coefficient of performance of this refrigerator k =?

Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when