An object is 2.0 cm from a double convex lens, with a focal length of 1.5 cm. Calculate the image distance. Remember to
include your data, equation, and work when solving this problem

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?