A refrigerator has a coefficient of performance equal to 6.00. The refrigerator takes in 110 J of energy from a cold reservoir in each cycle. Required:
a. Find the work required in each cycle.
b. Find the energy expelled to the hot reservoir.

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?