Estimate the equilibrium temperature of a long rotating cylinder of diameter d, and oriented in space with its axis normal to the sun’s rays. the cylinder is at a location in space where the irradiation from the sun (i. e., energy incident on a surface perpendicular to the sun’s rays per unit time per unit area) is 1500w/m^2. assume that the absorptivity of the surface of the cylinder to solar radiation, αs, is equal to its emissivity ε. and the outer space is a blackbody at 0 k.