A5.4 mw laser beam has its electric field vertical. if it passes through a polarizer with its transmission axis at 60 degree to the vertical, what's the power of the transmitted beam?
2. polarized light passes through a polarizer, and 70 % gets through. find the angle between the light's electric field and the polarizer's transmission axis.

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

Iwill give brainliest if you answer right : )

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot