The Sound from the Whistle of a Truck Moving at 17.0

question 115

Multiple Choice

The sound from the whistle of a truck moving at 17.0 m/s toward a cliff reflects from the cliff and is heard by the driver of the truck.When it is parked at the side of the road,the whistle from the truck produces sound of frequency 2.267 kHz.As observed by the driver of the truck,what is the change in frequency the sound from the whistle due to the reflection? The speed of sound is 343 m/s.

• A)236 Hz
• B)228 Hz
• C)207 Hz
• D)118 Hz
• E)472 Hz

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Definitions:

Payback Method

A capital budgeting technique that calculates the time required to recoup the cost of an investment, focusing on cash flow rather than profitability.

Time Value

The idea that having money now is more valuable than having the same amount later because of the possible income it can generate.

Obsolescence

The process of an asset becoming outdated or no longer used, often due to technological advancements.

Annual Rate of Return

The Annual Rate of Return is the percentage of profit or loss on an investment over a one-year period, taking into consideration both capital gains and dividends.