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:

Clothing Allowance

A sum of money given to cover the cost of clothing, often as part of a job requirement or allowance.

Purchase Discount

A reduction in price offered to buyers, often as an incentive to make a purchase within a specific timeframe or in larger quantities.

Neutral Subject Line

A subject line in an email or message that is impartial or without bias, often used to avoid influencing the recipient's initial reaction.

Passive Voice

A grammatical construction in which the subject of a sentence is the recipient of an action rather than the performer of the action.