The Frequency of a Car Horn Is F

question 64

Multiple Choice

The frequency of a car horn is f.What frequency is observed if both the car and the observer are at rest,but a wind is blowing toward the observer?

• A)f
• B)greater than f
• C)less than f
• D)either greater or less than f
• E)far greater than f,depending on how wind speed compares with the speed of sound

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