A Sound Source of Frequency 1000 Hz Moves at 40

question 45

Multiple Choice

A sound source of frequency 1000 Hz moves at 40.0 m/s toward a listener who is at rest.What is the apparent frequency heard by the listener? (speed of sound = 340 m/s)

• A) 853 Hz
• B) 872 Hz
• C) 1130 Hz
• D) 1170 Hz

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Definitions:

Output Per Worker

The quantity of goods or services produced divided by the number of workers, indicating the productivity level of labor within an economy.

Technology Level

The current state of technological advancement or development within a society or sector.

Per-worker Production Functions

Per-worker production functions describe the relationship between inputs used per worker (like capital per worker) and the output produced per worker, illustrating productivity.

Upward Shift

describes an increase or improvement in a given metric or condition, often depicted in graphs or charts.