A Certain Factory Whistle Can Be Heard Up to a Distance

question 55

Multiple Choice

A certain factory whistle can be heard up to a distance of 2.5 km.Assuming that the acoustic output of the whistle is uniform in all directions,how much acoustic power is emitted by the whistle? The threshold of human hearing is 1.0 × 10^-12 W/m².

• A)0.079 mW
• B)0.026 mW
• C)0.26 mW
• D)0.79 mW
• E)2.6 mW

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Definitions:

Indirect Approach

This strategy in communication entails providing background information and supporting details before presenting the main point.

Negative Message

Communication that delivers bad news or delivers information likely to disappoint or upset the recipient.

Obscure Bad News

Strategically minimizing the visibility or understanding of negative information or developments.

Sincere Apology

An authentic expression of regret for an action or mistake, highlighting genuine remorse and intention to rectify the situation.