Current is measured in Amperes (usually just referred to as âAmpsâ). An ampere is defined as 6.241*10 18 electrons (1 Coulomb) per second passing through a point in a circuit. Amps are represented in equations by the letter âIâ.
The X-1, piloted by Chuck Yeager, was the first manned airplane to exceed the speed of sound in level flight and was the first of the X-planes, a series of American experimental rocket planes (and non-rocket planes) designated for testing of new technologies and often kept secret.
These aircraft tolerate any pilot demands from ridiculously low speeds to supersonic flight.Most modern firearm bullets are supersonic, traveling faster than the speed of sound.Supersonic is used to describe things that move faster than the speed of sound in a particular medium, usually the air.