Aconvertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. the speed of the car is a constant 8.49 m/s, and the speed of sound is 345 m/s. what is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away?

You are sitting on the beach and wondering about the properties of mechanical waves. describe them in terms of ocean waves.

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud