Two Motors in a Factory Are Running at Slightly Different

question 6

Multiple Choice

Two motors in a factory are running at slightly different rates.One runs at 825 rpm and the other at 786 rpm.You hear the sound intensity increase and then decrease periodically due to wave interference.How much time elapses between successive maxima of the sound intensity?

• A) 1.5 s
• B) 1.4 s
• C) 1.7 s
• D) 1.8 s

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Definitions:

Depreciation

The process of allocating the cost of a tangible asset over its useful life, reflecting the decrease in value over time.

Capital Stock

The total value of all physical assets owned by a company that are used in producing goods and services.

Interest Rate

The percentage charged or paid for the use of money, typically expressed as an annual rate on loans or earned on deposits.

Investing

Allocating fiscal resources with the foresight of making an income or profit.