Find the charge on the capacitor in RLC series circuit where L=5/3H, R=100,c=1/30F and E(t)=300v. Assume the initial charge on the capacitor is 0C and the initoal current is 9A. what happens to the charge on the capacitor over time?

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0