A parallel ultrasound beam of intensity $$\(I_{0}\)$$ enters a region of soft tissue. After passing a distance of 2.1 cm through this tissue, the intensity of the ultrasound is $$\(0.62 I_{0}\)$$. Calculate the linear attenuation coefficient $$\(\mu\)$$ of ultrasound in the soft tissue. Give a unit with your answer. $$\(\mu=\)$$ unit

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