Homework Help: physics

Posted by tom on Friday, May 13, 2011 at 1:48am.

The function y(x, t) = (25.0 cm) cos(šx - 15št), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant when that point has the displacement y = +22.0 cm?

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