You hold one end of a string that is attached to a wall by its other end. the string has a linear mass density of 0.067 kg/m. you raise your end briskly at 11 m/s for 0.016 s, creating a transverse wave that moves at 37 m/s . part a how much work did you do on the string? express your answer with the appropriate units. w w = nothing nothing request answer part b what is the wave's energy? express your answer with the appropriate units.