A Car Approaches You at a Constant Speed,sounding Its Horn,and

question 1

Multiple Choice

A car approaches you at a constant speed,sounding its horn,and you hear a frequency of 76 Hz.After the car goes by,you hear a frequency of 65 Hz.What is the frequency of the sound emitted by the horn? The speed of sound in the air is 343 m/s.

• A)68 Hz
• B)69 Hz
• C)70 Hz
• D)71 Hz
• E)72 Hz

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Definitions:

Pascal

A unit of pressure in the International System of Units (SI), defined as one newton per square meter.

Hydraulic Circuits

Networks designed to use hydraulic fluid to transmit energy from one component to another within a hydraulic system.

Area Multiplied

The process of calculating the extended surface or space by multiplying dimensions, typically used in geometric calculations.