On a particularly foggy night, a boat travels due east at 10 m/s. there are safety lights, but with the low visibility, the captain opts to sound the horn for 3 seconds every 5 seconds. the captain hears a beat frequency on the third blast he watches his compass and turns hard port maintaining the turn. when he no longer hears the beat, he straightens out his heading.
1. what caused the beat frequency?
2. why did turning stop the beat?
3. what was the frequency of the beat assuming lsound = 350 m/s?

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix. b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds. c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

In the united states, tornadoes generally occur because of the freezing of ocean water underwater earthquakes meeting of cool and warm air masses shifting of warm and cool ocean currents