True&False Questions About basketball (numbers 11&12 don’t show but this is what they ask) 11.___ On a jump ball, a player may not tap the ball until it reaches “its” highest point.
12.___ A jump ball is taken in the center-restraining circle only at the start of the game.

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.