2.43 Write an expression for the wave shown in Fig. P.2.43 D. Find its wavelength, velocity, frequency, and period. 60 1= 0 40 20 0 -z (nm) -20 100 300 500 40 -60 1 = 0.66 X 10 15 s (z, 1) (arbitrary units) - z (nm) 100 300 500 1 = 1.33 X 10 5s z (nm) Figure P.2.43 A harmonic wave