R1=11 ohms R2=9 ohms C=100mF L=200mH and V=10V a) impedance between D and E is a/(bs+1), find a and b?

b) find the current passes R1 in A

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature