Question

Amy, 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. 1050 - - - - - -.-.-.-.-.-.-.-.-.-.--E-- R . Observed Frequency, (Hz) - - - - - - - - - - -100 -50 50 100 Position, (m) Greater than the speed in trial Ris ..... to that in S. Greater than ~ The speed in trial T is ..... that in other trials. Equal to When the car is far away, the average of the frequencies moving in and out is ..... the frequency at rest. Less than the distance of Amy from the path in Ris ..... in S. Less than the speed in trial Q is ..... that in other trials. Equal to the speed in trial U is ..... that in Q. Consider the average of 1/(1+x) and 1/((1-x). Is it equal to, greater than or smaller than 1? Submit Answer Incorrect. Tries 1/12 Previous Tries Using the data on the figure, calculate the speed of the car in trial Q. Use 340 m/s for the speed of sound. Submit Answer Tries 0/12

Answer 1

The solution of the problem is given below

Page No Selutag Date ly essect and unsalned Part V The speed lan baul U i frealrr than teat in o As the source isappoahig l Reason Clolotz) appenen frequety in than tthat n cese of & ao tz) more tha tha Lo h Speed of car n tual & 340 mle fapp 2 140 z pprceaching houre cet fapp frctual 900x 340 3५० - ७, 940 2 3 40-0210a x 34 900 x 3414.5 340 heading Sounce care 1 340 340+4 Poox 340 2P Swan 900x 3430- 15.8G hveng keed of otral& V145415.8 I5.1 mle 2