A satellite of mass m is in a stable circular orbit around Earth at a distance 1R from the center of Earth. The mass of Earth is eM. (a) Derive an expression for the following in terms of m, 1R, eM, and fundamental constants, as appropriate. i. The orbital speed 1u of the satellite ii. The total energy of the satellite in this orbit, assuming gravitational potential energy to be zero at an infinite distance from the center of Earth

Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.