Can you please help me select figure out these problems.

10. (10 points) A wave is sent down 5 meters of string that weighs 0.250 N. The wave can be de- scribed by the equation D(x,t) = (3.00 cm) sin[(12.0 rad/m)x - (650 rad/s)t], where x is in me- ters and t is in second. (a) What is the amplitude of the wave's oscillation? (b) What is the wavelength of the traveling wave? (c) What is the tension in the string? (d) What is the fastest speed a portion of the string will move while the wave passes by