The Loudness L of a Sound (Measured in Decibels, DB)

question 168

Short Answer

The loudness L of a sound (measured in decibels, dB) is inversely proportional to the square of the distance d from the source of the sound. A person who is 10 ft from a lawn mower experiences a sound level of 70 dB. How loud is the lawn mower when the person is 25 ft away?

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Definitions:

Credit Instrument

A document that evidences a debt and the promise of repayment, such as bonds, notes, or mortgages.

Transferor's Warranties

Guarantees made by a seller (transferor) to a buyer about the condition, legality, and ownership status of the goods or property being sold.

Presenter's Warranties

Guarantees made by the presenter of a negotiable instrument, such as a check, regarding its legitimacy and their authority to present it.

Implied Warranties

Legal guarantees assumed in a transaction, suggesting that a product will meet certain standards even if not explicitly stated.