a nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg, as shown below. The magnitude of the normal force acting on the bed is

Convection occurs when thermal energy is transferred by the movement of

Which of the following statement is false

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.