An electronic package with a surface area of 1 m2 placed in an orbiting space station is exposed to space. the electronics in this package dissipate all 1850 w of its power to space through its exposed surface. the exposed surface has an emissivity of 1.0 and an absorptivity of 0.25. given: σ = 5.67×10–8 w/m2·k4

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?