Aresearch vessel is mapping the bottom of the ocean using sonar. it emits a short sound pulse called "ping" downward. the frequency of the sound is 5600 hz. in water sound propagates at a speed of 1474 m/s. the sound pulse is then reflected back from the bottom of the ocean and it is detected by the vessel 8.88 s after it was emitted. how deep is the ocean just below the vessel?

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.