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4 Waves

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Question 29

An engineer places an ultrasound probe against a concrete support. A boundary inside the concrete is 0.60 m from the probe. A pulse reflected from the boundary returns to the probe after 300 μs300\ \mu\mathrm{s}300 μs.

What is the speed of the ultrasound pulse in the concrete?

[1]
A

4.0×103 m/s4.0\times10^3\ \mathrm{m/s}4.0×103 m/s

B

4.0×102 m/s4.0\times10^2\ \mathrm{m/s}4.0×102 m/s

C

2.0×103 m/s2.0\times10^3\ \mathrm{m/s}2.0×103 m/s

D

8.0×103 m/s8.0\times10^3\ \mathrm{m/s}8.0×103 m/s

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4 Waves Questions

  1. GCSE
  2. /Physics
  3. /4 Waves

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