Consider a harmonic wave with the following wave function: y=(12cm)cos(π4.5cmx−π16st).
Choose the graph of the wave at tt= 4.0 ss.
Choose the graph of the wave at tt = 8.0 ss.
What is the least amount of time required for a given point on this wave to move from yy = 0 to yy = 12cmcm?
Express your answer using two significant figures.
