State a problem. Describe what you want to find out about the relationship of the following factors to the amount of water erosion that occurs on a slope: slope gradient, presence or absence of vegetation, and rain intensity.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Which feature indicates that mars resides in the inner region of the solar system

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?