my forehead is covered in pimples and I need to put on a play in 1 hour please help me get rid of my pimples at home quick PLEASE I DONT WANT TO LOOK UGLY FIRST TO ANSWER GET CALLED BRAINEST THANK YOU

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.

How does the formation of intrusive and extrusive igneous rocks differ?

Abowling ball rolls 32 meters in 0.8 seconds what is the average speed in m/s of the bowling ball in m/s