You Are Driving Along a Highway at 35

question 15

Multiple Choice

You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind and you perceive the frequency as 1310 Hz. You are relieved that he is in pursuit of a different speeder when he continues past you, but now you perceive the frequency as 1240 Hz. What is the frequency of the siren in the police car? The speed of sound in air is 343 m/s.

• A) 1300 Hz
• B) 1320 Hz
• C) 1270 Hz
• D) 1360 Hz
• E) 1370 Hz

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Definitions:

Work Flow Design

The process of analyzing the tasks necessary for the production of a product or service.

Tasks

Specific pieces of work to be done, usually as part of a larger project or job role.

Mental Demands

The cognitive requirements of a job, including thinking, decision-making, learning, and concentration needed to complete tasks effectively.

Dim Lighting

Suboptimal lighting conditions that can lead to decreased visibility, potentially affecting mood and productivity.