A human wave. During sporting events within large, densely packed stadiums, spectators will send a wave (or pulse) around the stadium (see the figure below). As the wave reaches a group of spectators, they stand with a cheer and then sit. At any instant, the width w of the wave is the distance from the leading edge (people are just about to stand) to the trailing edge (people have just sat down). Suppose a human wave travels a distance of 873 seats around a stadium in 42.6 s, with spectators requiring about 2.10 s to respond to the wave's passage by standing and then sitting. What are (a) the wave speed vand (b) width w? (a) 20.49 seats/s (b) i 43.03 seats