What is the average power of AC current if Vpea 10 V and Irm

What is the average power of AC current if V_pea= 10 V and I_rmS= 2.0 A? What is the frequency of oscillations in the LC circuit that consists of 25 mF capacitance and 100 H inductance? Find the radiation pressure produced on the absorbing surface by the light of intensity 1.5 kW/m^2. Vrms*Irms = Mean power = 14.14 W w = 1/(L*C)^0.5 = 0.632 rad/s Radiation Pressure = E/c = 0.5 * 10^-5 W/m^2