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7. Consider the resultant wave equation, y = (2.48 cm)sin[(5.0 cm³¹)x]cos[(x s¹)t].
(a) What is the period of the wave?
(b) What is the speed (in the x-direction) of the wave?
(c) What is the maximum transverse speed of the wave?
(d) What type of wave is this?

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