Ultrasound frequency problem

  • #1
192
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1. Ultrasound with a frequency of 4.25MHz can be used to produce images of the human body. If the speed of sound in the body is the same as in salt water 1.50km/s, what is the wavelength in the body?



2. v= wavelength(f)
M = 10^6




3. v= wavelength(f)
wavelength = v/f
= .0015/4250000
= 3.53 x 10^-10 m
I'm not sure if this is right.
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
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wavelength = v/f
= .0015/4250000

This step is wrong. 1.5km = ........m?
 
  • #3
192
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wavelength = v/f
= .0015/4250000

This step is wrong. 1.5km = ........m?
o sorry my mistake
um so it should be (1500/4250000) which equals 3.53 x 10^-4 m?
 
  • #4
rl.bhat
Homework Helper
4,433
8


That is right.
 
  • #5
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