Beats: Two Strings of Identical Material and Radius Are Stretched

question 28

Multiple Choice

Beats: Two strings of identical material and radius are stretched with the same tension with their ends fixed, but one string is 8.0 mm longer than the other. Waves on these strings propagate at 420 m/s. The fundamental frequency of the longer string is 528 Hz. What is the beat frequency when each string is vibrating at its fundamental frequency?

• A) 22 Hz
• B) 11 Hz
• C) 16 Hz
• D) 5.5 Hz
• E) 27 Hz

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Definitions:

Direct Labor

The labor cost associated with workers who are directly involved in the production of goods or the provision of services.

Direct Materials

Raw materials that are directly incorporated into the finished product and can be easily traced to it.

Ideal Standards

Standards that can be achieved only under perfect operating conditions, such as no idle time, no machine breakdowns, and no materials spoilage; also called theoretical standards.

Machine Breakdowns

Unplanned events where machinery or equipment fails to operate, potentially causing disruptions in production and incurred costs for repairs and maintenance.