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12 questions from this quiz
Amplitude
Pitch increases
20 Hz20 \text{ Hz}20 Hz to 20,000 Hz20,000 \text{ Hz}20,000 Hz
Ultrasonic
About 35,000 Hz35,000 \text{ Hz}35,000 Hz
Sends waves and detects echoes
Velocity of blood flow
Non-invasive and non-ionising
Non-destructive testing
Cavitation bubbles
It decreases
More energy per second
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