A mole of a monatomic ideal gas at point 1 (250 kPa, 15 L) is expanded isothermally untilthe volume is doubled at point 2. Then it is cooled isochorically until the pressure is 100 kPaat point 3. The temperature drops in this process. The gas is now compressed isothermallyuntil its volume is back to 15 L, but its pressure is now 200 kPa (point 4). Finally, the gasis heated isochorically to return to point 1. a. Draw the four processes and label the points in the pV plane.
b. Calculate the temperature at points 1 and 3.
c. Find the total work done by the gas.

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?