A Music Tuner Uses a 554-Hz C# tuning Fork to Tune

question 69

Multiple Choice

A music tuner uses a 554-Hz C# tuning fork to tune the frequency of a musical instrument.If the tuner hears a beat frequency of 2 Hz,what is the frequency of the instrument?

• A)It must be 556 Hz.
• B)It must be 552 Hz.
• C)It could be either 556 Hz or 552 Hz.
• D)It could be either 553 Hz or 555 Hz.
• E)It is neither 556 Hz or 552 Hz.

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Definitions:

MB = MC Rule

The principle that firms maximize profit by producing where marginal benefit (MB) equals marginal cost (MC), determining the optimal level of output.

Loanable Funds Theory

An economic theory that describes the market for borrowing and lending, where interest rates are determined by the supply of and demand for loanable funds.

Nominal Rate of Interest

The nominal interest rate on a loan or investment, before adjusting for inflation.

Real Rate of Interest

The real rate of interest is the rate of interest an investor expects to receive after allowing for inflation, reflecting the true earning potential of an investment.