2) 2 sinusoidal waves are traveling in opposite direction and have the following wave functions: y1 0.4 sin (+0,25nt +4mx) y2 0.4 sin (-0,25nt + 4nx) Determine the maximum amplitude of the point situated at x- 1m AA 0.4 m BA 0.8 m CA 0 m D-A 02 m EA 0.1-m

3: Which of the following describes a standing wave of amplitude 0.5 m, wavelength 2 m and period 32 of amplitude s? (in each, z is in m and t is in s) a: 0.5 sin(x-t/16) b: 0.5 sin(x/16-nt) c: 0.5 sin(x) cos(nt/16) d: 0.5 sin(x/16) cos(nt) e: sin(x) cos(16mt)

2 x (cm) -2- -41 A The displacement of a vibrating string versus position along the string is shown in the figure. The periodic waves have a speed of 10.0 cm/s. A and B are two points on the string. What is the wavelength of the wave? (ww) h 1.5 4.5- 10.5 13.5 16.5

5. Calculate the time displacement for each of the given waves, stating lead or lag. (a) (b) (c) 20 sin 100t+ || cos(7t-0.26) and 5 cos (77) COS ++15 -1) ₁ 1 t+1 eл ел and the function before the shift. and the function before the shift.

In the following two questions, a block oscillates on a spring with a spring constant of 35 N/m. The block's position is described by x = (0.6 m) cos(40t), with t measured in seconds. 7) What is the total mechanical energy of the oscillator? A. 1.9 J B. 2.5 J C. 3.8 J D. 5.1 J E. 6.3 J and sust 8) What is the block's maximum speed? A. 6 m/s B. 12 m/s C. 18 m/s D. 24 m/s E. 36 m/s ma CE 3 vistamixo qqA Jisqs in 00.E sus adiud wallow (EE 00.8 sritiw aqoosslot llames yd baviDEST Vilen polavsw agstovs sri ad of trigil srit