Calculate the energy stored in a 1 nH inductor if the current flowing through it is (a) 0 mA; (b) 1 mA; (c) 20 A; (d) 5 sin 6t mA, t > 0. Hayt, William. Engineering Circuit Analysis (p. 265). McGraw-Hill Higher Education. Kindle Edition.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.