Wave 1 Has Intensity 9

question 57

Multiple Choice

Wave 1 has intensity 9.0 I₀ while wave 2 has intensity 4.0 I₀. What is their ratio of amplitudes, A₁/A₂?

• A) 20
• B) 5.1
• C) 2.3
• D) 1.5
• E) 1.3

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Definitions:

Present Value

The current worth of a future sum of money or stream of cash flows given a specified rate of return, used in discounting to address the time value of money.

Interest Rate

The fee, represented as a percentage of the total loan amount, that a lender requires from a borrower for the privilege of borrowing money or other resources.

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Interest Rate

The cost of borrowing money, expressed as a percentage of the amount borrowed per unit of time.