Thel speed of sound in water is 1498 m/s. a sonar signal is sent straight down from a ship at a point just below the water surface, and 2.50 s later reflected signal is detected. how deep is the water

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

What are atoms of the same element with varying number of neutrons

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).