Fishing boats use sonar to locate schools of fish. What characteristic of sound is most important for this application of sonar? Sound waves reflect off some surfaces
Sound waves diffract around corners
Sound waves interfere when they overlap
Sound waves spread out from a source

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

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?