Need asap- thank you!

No background given!!

Prelab 1: These two images show constructive and destructive interference of waves. = Images from http://www.phys.uconn.edu/~gibson/Notes/Section5 2/Sec5 2.htm This superposition comes from adding together the amplitudes of the two waves at every point along the medium. Sketch the superposition of these two waves on this graph. Superposition of Waves 5.5 4.5 3.5 2.5 1.5 0.5 -0.5 -1.5 -2.5 3.5 4.5 -5.5