What is potential energy?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Give an example in which the electrical energy changes to light energy

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?