1a. A sinusoidal wave is generated by moving the end of a string upand down peri

Question

1a. A sinusoidal wave is generated by moving the end of a string upand down periodically. The generator must supply the greatest powerwhen the end of the string has its greatestacceleration
has its greatestdisplacement
has one-fourth itsgreatest displacement
has its leastdisplacement
has half itsgreatest displacement
1b. The sum of two sinusoidal traveling waves is a sinusoidaltraveling wave only if: their frequenciesare the same and their amplitudes are the same.
their amplitudesare the same and they travel in the same direction.
their frequenciesare the same and they travel in opposite directions.
their amplitudesare the same and they travel in opposite directions.
their frequenciesare the same and they travel in the same direction. Pls kindly help. Will rate! Thanks!

Explanation / Answer

1a. A sinusoidal wave is generated by moving the end of a string upand down periodically. The generator must supply the greatest powerwhen the end of the string has its greatestacceleration has its greatestdisplacement has one-fourth itsgreatest displacement has its least displacement has half itsgreatest displacement 1b. The sum of two sinusoidal traveling waves is a sinusoidaltraveling wave only if: their frequenciesare the same and their amplitudes are the same. their amplitudesare the same and they travel in the same direction. their frequenciesare the same and they travel in opposite directions. their amplitudesare the same and they travel in opposite directions. their frequencies are the same and they travel in thesame direction

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