Mathematics of Traveling Waves: Four Traveling Waves Are Described by the Following

question 11

Multiple Choice

Mathematics of traveling waves: Four traveling waves are described by the following equations, where all quantities are measured in SI units and y represents the displacement. I: y = 0.12 cos(3x - 21t)
II: y = 0.15 sin(6x + 42t)
III: y = 0.13 cos(6x + 21t)
IV: y = -0.27 sin(3x - 42t)
Which of these waves have the same period?

• A) I and III, and also II and IV
• B) I and IV, and also II and III
• C) I and II, and also III and IV
• D) All of them have the same period.
• E) They all have different periods.

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Definitions:

Revocation

The official cancellation or withdrawal of an offer, agreement, or license, making it no longer valid.

Offeror Dies

A legal situation that generally results in the termination of an offer when the person making the offer passes away before acceptance, affecting contract formation.

Insanity Of Offeror

A legal defense where the validity of a contract is questioned due to the mental capability of the party making the offer at the time of agreement.

Counter-Offer

An offer made in response to another's offer, effectively rejecting the original offer and presenting a new one for consideration.