Consider a refrigerator that is made by connecting a heat engine (left) and refrigerator (right), as shown below. The heat input Qm comes from Hot Reservoir 1 at T = T#1, and the object being cooled is Cold Reservoir 2 (by extracting Qc2) at T = To2. In this process waste heat is expelled to both the Cold Reservoir 1 at T = To1) and the Hot Reservoir 2 at T = TH2. The engine part generates the work W as shown. Hot Reservoir 1 Hot Reservoir 2 THI TH2 QH1 QH2 Heat W refrigerator Engine Q cz TC1 TC2 Cold Reservoir 1 Cold Reservoir 2 Find the expression for the Coefficient of Performance of this combined refrigerator. Your answer should be expressed in terms of variables given here, i.e., all or some combination of THI, To1, TH2, To2, QH1, QC1, QHI, QC1, QH2, QC2 and W