The uniform intensity of radiation upon a heat shield is 1600 W/m2 . The heat shield is in the form of an infinite black sheet, and the surroundings are at 0 K. Find: (a) the intensity of radiation emitted into the surroundings by the heat shield in equilibrium, (b) the equilibrium temperature of the heat shield, (c) the intensity of radiation emitted by a heat shield with reflectivity R

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0