A wave in a rope travels at 12 meters per second, and the wavelength of the wave is measured at 1.2 meters. Find the frequency of the wave and its period.

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answer(20) psi;

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

the right answer is 0.3 meters per second