Does the sound absorption coefficient of a material, ?, vary with frequency? What is the unit of measurement of ?? What are the theoretical minimum and maximum values of ??

What will be an ideal response?


The value of ? varies with frequency. It has no units, i.e., it is simply a number. The value of ? varies between 0 and 1.

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Symbols used to show cable tray systems on working drawings are explained in the _____.

a. NECĀ® b. legend c. detail drawings d. isometric drawings

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Perhaps the greatest objection to cloning is that it will:

a. make cloning's long-term effects clear b. lead to the process of human cloning c. perpetuate desired breeding stock d. eliminate serious gene abnormalities

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Confined, unhealthy animals that cannot escape are more profitable for producers

Indicate whether the statement is true or false

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The external covering of the penis is called the sheath or prepuce.

Answer the following statement true (T) or false (F)

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