Acoustic impedances of the fluid bottom material
If a plane wave is reflected from the ocean floor at normal incidence with a level 20 dB below that of the incident wave, what are the possible values of the specific acoustic impedances of the fluid bottom material?
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Name the scale of measurement that applies to each of the following situations:
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The coefficient of compressibility is 8.0 x10^-7 atm^-1. Estimate the molar volume of Al2O3 at 400 degrees celsius and 10 kbars pressure (10x10^3 atm).
What is the angular separation of two spectral lines of wavelengths 440 nm and 388 nm formed in order m=2 with a 382 line/mm grating? Express the answer in degrees with two decimal places.
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