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A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 Mhz. The speed of sound in a tissue is 1.7 km/s. The wave length of sound in a tissue close to |
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Answer» A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 Mhz. The speed of sound in a tissue is 1.7 km/s. The wave length of sound in a tissue close to |
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