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:

Non-Normal Cash Flows

Cash inflows and outflows that do not follow a regular, predictable pattern over time.

MIRR

Modified Internal Rate of Return; a financial measure used to evaluate the attractiveness of investments, adjusting for the costs of investment and for different rates of reinvestment of cash flows.

Required Rate of Return

The minimum return an investor expects to receive from an investment, considering the risk associated with it.

NPV

Net Present Value (NPV) is the difference between the present value of cash inflows and the present value of cash outflows over a period of time. It is used in capital budgeting to analyze the profitability of an investment.