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Question 53

During an ultrasound check of a steel component, echoes from two internal boundaries return after $μs20\ \mu\mathrm{s}$ and $μs44\ \mu\mathrm{s}$ . The speed of ultrasound in the steel is 5900 m/s. What is the distance between the boundaries?

[1]

$mm35.4\ \mathrm{mm}$

$mm70.8\ \mathrm{mm}$

$mm141.6\ \mathrm{mm}$

$mm129.8\ \mathrm{mm}$

4 Waves

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Question 53

During an ultrasound check of a steel component, echoes from two internal boundaries return after $μs20\ \mu\mathrm{s}$ and $μs44\ \mu\mathrm{s}$ . The speed of ultrasound in the steel is 5900 m/s. What is the distance between the boundaries?

[1]

$mm35.4\ \mathrm{mm}$

$mm70.8\ \mathrm{mm}$

$mm141.6\ \mathrm{mm}$

$mm129.8\ \mathrm{mm}$

4 Waves

Question 53

Markscheme

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Question 53

Markscheme

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Question 53

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Question 53

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