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Afina-wow [57]
3 years ago
7

A power ratio of 9000000:1 corresponds to ... dB?

Computers and Technology
1 answer:
sertanlavr [38]3 years ago
4 0

Answer:

69.54

Explanation:

A power ratio of 9000000:1 corresponds to 69.54 dB.

The calculation is presented below:

Formula for calculating Power ratio (db) = 10 * log [P(out)/P(in)]

Since the given ratio is 9000000:1, substituting in the formula gives us 10 * log (9000000/1)

Note that log 9000000 = 6.954

Therefore, 10 * log (9000000/1) = 69.54

Hence the required power ratio in db is 69.54 db.

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