While You Are Standing on a Corner,a Police Car with a 1-KHz

question 24

Multiple Choice

While you are standing on a corner,a police car with a 1-kHz siren drives past you at 30 m/s with its siren on.The speed of sound is 340 m/s.After the car has passed,the frequency you hear is about

• A)1.10 kHz
• B)1.09 kHz
• C)1.00 kHz
• D)919 Hz
• E)912 Hz

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Definitions:

Formal Presentations

Structured and prepared speeches or demonstrations delivered to an audience, following conventional rules and standards.

Speech

The verbal expression or exchange of ideas, information, or feelings, often delivered before an audience.

Summary

A brief statement or account that presents the main points or essence of a longer piece of writing or speech.

Oral Reports

Verbal presentations of information or findings, often delivered in formal settings to convey research results, project updates, or proposals.