Use the information in (a) to calculate the intensity reflection coefficient for: an air-tissue boundary intensity reflection coefficient $$\(=\)$$
Exam No：9702_s23_qp_43 Year：2023 Question No：8(b)(i)
Answer:
Knowledge points:
14.1.1 describe what is meant by wave motion as illustrated by vibration in ropes, springs and ripple tanks
14.1.2 understand and use the terms displacement, amplitude, phase difference, period, frequency, wavelength and speed
14.1.3 deduce, from the definitions of speed, frequency and wavelength, the wave equation v = fm d) recall and use the equation v = fm
14.1.4 understand that energy is transferred by a progressive wave
14.1.5 recall and use the relationship intensity ∝ (amplitude)2
24.1 Production and use of ultrasound
Solution:
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