Afarmhand attaches a 25-kg bale of hay to one end of a rope passing over a
frictionless pulley connected to a beam in the hay barn. another farmhand then
pulls down on the opposite end of the rope with a force of 277 n. ignoring the
mass of the rope, what will be the magnitude and direction of the bale's
acceleration if the gravitational force acting on it is 245 n?

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.