A Heavy Stone of Mass M Is Hung from the Ceiling

question 44

Multiple Choice

A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long.When you gently pluck the upper end of the wire,a pulse travels down the wire and returns 7.84 ms later,having reflected off the lower end.The speed of sound in the room is 344 m/s,and the stone is heavy enough to prevent the lower end of the wire from moving.If the wire is vibrating in its second overtone,what is the wavelength of the sound it will produce?

• A) 0.217 m
• B) 0.433 m
• C) 0.650 m
• D) 0.899 m
• E) 1.35 m

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Definitions:

Initial Cost

Initial cost refers to the amount of money spent to acquire, or the cost associated with starting, an investment, project, or venture, including all necessary expenses to prepare the asset for its intended use.

Payback

The period of time required to recoup the funds expended in an investment, or how long it takes for an investment to reach a breakeven point.

Annual Cash Flows

The total cash that is generated and used by a business in one fiscal year.

Required Rate

This is often referred to as the minimum acceptable return on an investment, set by investors or managers.