Standing waves on a string: A standing wave is oscillating at 690 Hz on a string, as shown in the figure. What is the speed of traveling waves on this string? 
Definitions:
Benzoyl Chloride
An organic compound used as an acylating agent in organic synthesis, with the formula C6H5COCl.
Phenyl Propyl Ketone
An organic compound consisting of a ketone functional group bonded to a phenyl group and a propyl group.
Major Organic Product
The primary product of an organic reaction that is formed in greater quantity than any other products.
Grignard Reagent
A highly reactive chemical compound formed by the reaction of an alkyl or aryl magnesium halide with a metal, used in organic synthesis.
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