Joe, standing near a straight road, records the sound of the horn of a car trave

Question

Joe, standing near a straight road, records the sound of the horn of a car traveling at a constant speed. The recorded frequency as a function of the car's position along the road for trials at different car speeds is accurately graphed below.

Greater than Less than Equal to  When the car is far away, the average of the frequencies moving in and out is ..... the frequency at rest.
Greater than Less than Equal to  The distance of Joe from the path in U is ..... in Q.
Greater than Less than Equal to  The speed in trial R is ..... that in other trials.
Greater than Less than Equal to  The speed in trial S is ..... that in T.
Greater than Less than Equal to  The speed in trial T is ..... that in other trials.
Greater than Less than Equal to  The speed in trial Q is ..... to that in U.

Using the data on the figure, calculate the speed of the car in trial S. Use 340 m/s for the speed of sound.

** Please answer both parts!! My answers for the first part (greater than, less than, or equal too) are incorrect. Thank you!

Explanation / Answer

You didnt provide the graph. But i can tell you how to solve the answer

We know that greater the velocity of the source, the lower the frequency heard.

It is true for motion towards the listener, since the higher the velocity the greater the frequency shift.

We also know that average frequencies equals the frequency at rest

When the bodies are traveling at the same speed, as you can see by the way they converge when the distances are long. The divergence closer in means joe is not as close to the track.

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