So if you multiply torque (in pound-feet) by engine speed (in RPM) and divide the product by 5,252, RPM is converted to radians per second and you can get from torque to horsepower -- from pound-feet to foot-pounds per second..
Did it explode? Nope! You can still see it flying. Then what was that sound? It was a sonic boom. A sonic boom is a loud sound kind of like an explosion. It's caused by shock waves created by any object that travels through the air faster than the speed of sound. Sonic booms create huge amounts of sound energy. When an object moves through the air, it makes pressure waves in front of and behind it.
A. The banging is the vibration of metal coils in the machine caused by rapid pulses of electricity, said Dr. Keith Hentel, chief of emergency/musculoskeletal imaging at NewYork-Presbyterian Hospital/Weill Cornell Medical Center.he pulses cause not just the desired changes but undesired vibrations of the gradient coils, resulting in the banging heard during an M.R.I. examination. As stronger magnets result in stronger vibrations, the higher the field strength of the M.R.I. scanner, measured in teslas, the louder the banging, Dr. Hentel said.