A Pair of Sound Wave Sources Interfere Destructively at a Point

question 52

Multiple Choice

A pair of sound wave sources interfere destructively at a point that is 3/4 of the way from one speaker to the other.If the speed of sound is 343 m/s,and the sound waves are emitted at 880 Hz,which of the following is a possible distance between the two speakers?

• A) 2.7 m
• B) 0.58 m
• C) 1.16 m
• D) 1.9 m
• E) 77 cm

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The percentage of earnings paid to shareholders in the form of dividends.

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The rate at which the next dollar of taxable income is taxed, illustrating how much tax applies to an additional dollar of income.

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A chart that delineates the tax rates applicable to different levels of income, used to calculate taxes owed.

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