A train is moving parallel to a highway with a constant speed of 20 m/sec. A car is traveling in the same direction as the train with a speed of 30 m/sec. The car horn sounds at a frequency of 510 Hz, and the train whistle sounds at a frequency of 320 Hz. . A.When the car is behind the train, what frequency does the driver observe for the train whistle? (Treat the train whistleas the sound source, the driver as the listener. B.When the car is in front of the train, what frequency does the passenger on the train observe for the car horn just afterthe car passes? ( Treat the car as the sound source, passenger as the I istener.

A train approaches a station platform at a speed of 10 m/s, blowing its whistle at a frequency of 100 Hz, as measured by the engineer.  What frequency will be measured by a person on the platform walking in the same direction as the train is moving at 1 m/s?  (Assume the velocity of sound is 342 m/s.)

Ocean waves are traveling to the east at 3.6 m/s with a distance of 16 m between crests. (a) With what frequency do the waves hit the front of a boat when the boat is at anchor? Hz(b) With what frequency do the waves hit the front of a boat when the boat is moving westward at 1.2 m/s? Hz

Please explain how you got the answer for this, thank you so much!

The SR-71 “Blackbird” flies over 2,000 mph. If this planes is flying at 2,000 mph at an altitude of 40,000 ft, how long after it passes over a point on the ground will a groundobserver hear the boom? The speed of sound is 768 mph. This is all the information given.

Wind gusts create ripples on the ocean that have a wavelength of 0.05m and propagate at 2.00 m/s. What is their frequency?

.. A car horn emits a frequency of 400 Hz in 20 °C air, which has a speed of sound of 343 m/s. If the car is moving toward a stationary observer at 20 m/s, what is the frequency that is observed? fabs =f souroc V±V obs V±V Sobe = ? Source= VE source at 10 m/s in 15 °C air.

A train whistle blown on a train has a frequency of 306 Hz. What will the frequency of the whistle sound like to a waiting passenger standing at the train station if the train is heading into the station at 23 m/s? Assume the speed of sound in air is 340 m/s. Express your answer frequency in Hz

Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 1.90 m/s. What is their frequency?

A boy is standing at a railroad crossing for a track that runs east and west. As he faces the track, east is to his right and west is to his left. Two trains on the track some distance apart are headed west, both at speeds of 10.00 m/s, and blowing their whistles (which have the same frequency). One train is approaching him from the east and the other is traveling away from him toward the west. (Assume the speed of sound is 343 m/s.) (a) If he hears a beat frequency of 7.00 Hz, determine the frequency (in Hz) emitted by the two whistles. 120.05 Hz (b) What If? What would be the frequency (in Hz) of the beats that he hears if the lead train stops at a station (and continues to blow its whistle) while the second train continues traveling toward him? . Hz