The following plots are a snapshot (left) and history (right) graph of a traveling wave.

(a) What is the period of the wave?

(b) What is the wavenumber of the wave?

(c) What is the speed of the wave?

(d) Write an equation for the wave displacement as a function of position (x) AND time (t).

(e) Can you tell if the wave is transverse or longitudinal? Explain.