Find the period of a wave of 100-m wavelength in deep water where 
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Definitions:
Salvage Value
The projected salvage value of an asset at the termination of its useful life.
Net Present Value
A method used in capital budgeting to analyze the profitability of an investment or project, calculating the difference between the present value of cash inflows and outflows over a period of time.
Pretax Return
The earnings generated by an investment or business before taxes have been deducted.
Investment Projects
Initiatives undertaken by businesses or individuals to invest capital with the expectation of generating financial returns over time.
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