A Certain String, Clamped at Both Ends, Vibrates in Seven

question 29

Multiple Choice

A certain string, clamped at both ends, vibrates in seven segments at a frequency of 2.40 × 10² Hz. What frequency will cause it to vibrate in four segments?

• A)89 Hz
• B)137 Hz
• C)274 Hz
• D)411 Hz
• E)420 Hz

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Definitions:

Marginal Cost

The change in total cost that arises when the quantity produced is increased by one unit.

Perfectly Competitive

A market structure where many firms sell identical products, entry and exit are easy, and no single seller can influence the market price.

Marginal Cost

The increase in total cost that arises from producing one additional unit of a good or service.

Total Revenue

The total amount of income generated by the sale of goods or services before any expenses are subtracted.