An Am transmitter supplies XKW to the antenna when it is unmodulated if the total power radiated by the transmitter is YKW when the modulation index is m. given that the unmodulated wave is V while antenna load is R . show that m=(2x^-1(y-x)^1/2

Agas is contained in a vertical, frictionless piston–cylinder device. the piston has a mass of 3.2 kg and a cross-sectional area of 35 cm2. a compressed spring above the piston exerts a force of 190 n on the piston. if the atmospheric pressure is 95 kpa, determine the pressure inside the cylinder.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

By what primary heat transfer mechanism does the sun warm the earth?