owards a prey. Does the prey move away or to z frequency? What is the speed of the prey rela

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Chapter1: Units, Trigonometry. And Vectors
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Can someone solve this problem for me is part of homework and I don’t understand how to isolate
A bat sends an ultrasound signal of 30 kHz frequency towards a prey. Does the prey move away or towards
the bat if the signal the bat receives back has 28.5 kHz frequency? What is the speed of the prey relative to
the bat? Take 340 m/s for the speed of sound.
The prey moves away from
the bat.
The speed of the prey, Vprey = 340
X Units m/s
What frequency will the bat detect if the prey changes its direction of motion to the opposite but keeps
the same speed?
The frequency detected by the bat, f = 1.5
X Units kHz
Question Help: O Message instructor D Post to forum
V Question 13
B 0.04/1 pt G Details
Two submarines A and B are approaching each other along a straight line as shown below. The speed of
submarine A is VA = 22 m/s, the speed of submarine B is unknown. Submarine A sends a 470-Hz acoustic
signal towards submarine B and receives a reflected signal of a higher frequency of 504 Hz. What is the
speed of submarine B if the speed of sound in water is 1500 m/s?
V
V,
B
Transcribed Image Text:A bat sends an ultrasound signal of 30 kHz frequency towards a prey. Does the prey move away or towards the bat if the signal the bat receives back has 28.5 kHz frequency? What is the speed of the prey relative to the bat? Take 340 m/s for the speed of sound. The prey moves away from the bat. The speed of the prey, Vprey = 340 X Units m/s What frequency will the bat detect if the prey changes its direction of motion to the opposite but keeps the same speed? The frequency detected by the bat, f = 1.5 X Units kHz Question Help: O Message instructor D Post to forum V Question 13 B 0.04/1 pt G Details Two submarines A and B are approaching each other along a straight line as shown below. The speed of submarine A is VA = 22 m/s, the speed of submarine B is unknown. Submarine A sends a 470-Hz acoustic signal towards submarine B and receives a reflected signal of a higher frequency of 504 Hz. What is the speed of submarine B if the speed of sound in water is 1500 m/s? V V, B
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