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| 1. |
Acoustic impedance of human skin is A. 1.65 × 106 kg m2 s -1 B. 1.71 × 106 kg m-2 s -1 C. 2 × 106 kg m-2 s-1 D. 2 × 107 kg m-3 s-2 |
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Answer» B. 1.71 × 106 kg m-2 s-1 |
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