The function y(x, t) = (25.0 cm) cos(πx - 27πt), 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?
FDSFSDFSDFSDFJoy is planning to purchase a sweater that costs $30 dollars at her local department store. The sweaters are on sale for 20% off. Which steps are needed to find the sale price of the sweater?
