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Chapter: 16.3 / Q: 10
When a sound with a particular frequency is played at a loudness of 60 dB, and compared to the same sound played at 10 dB, what can be said about the intensity (in W/m2 ) of the 60 dB sound? It is:
Chapter: 16.3 / Q: 11
How much louder does a sound of 30 dB sound when compared to the same sound played at 10 dB?
Chapter: 16.3 / Q: 12
Which of the following sound levels, if prolonged, will damage the hearing mechanism of the ear without being perceived as painful?
Chapter: 16.4 / Q: 1
What frequencies are attributed to the inaudible sound known as Ultrasound?
Chapter: 16.4 / Q: 2
Prior to an imaging examination using ultrasound, the skin surface is coated with a gel substance known as a “coupling agent”. What is the purpose of the gel?
Chapter: 16.4 / Q: 3
Which statement about a Doppler ultrasound stethoscope is true?
Chapter: 16.4 / Q: 4
Which of the following is considered to be the diagnostic ultrasound frequency range?
Chapter: 16.4 / Q: 5
What will cause a large percentage of the ultrasound energy to be reflected from the interface between two media? This will happen if:
Chapter: 16.4 / Q: 6
Ultrasound radiation may be characterised as which one of the following?
Chapter: 16.4 / Q: 7
What is Ultrasound?
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