A sinusoidal wave moving along a string is shown twice below, as crest A travels
ID: 1784953 • Letter: A
Question
A sinusoidal wave moving along a string is shown twice below, as crest A travels in the positive direction of an x axis by distance d = 2.0 cm in 8.2 ms. The tick marks along the axis are separated by 4.0 cm; height
sinusoldal wave mo along a string is shown twice below, as crest A travels in the positive direction of an x axis by distance 2.0 cm in 8.2 ms. The tick marks alo the axis are separated by 4.0 cm; helght 6.00 mm The wave equation is of the form below. x, t) m sin (a) What is Ym Emm (b) What is k? t) 9.3rad/m (c) what is a 95.8 rad/s (d) what is the correct choice of sign in front of a?Explanation / Answer
c= frequency ( wave length)
( 2 x 10^-2 ) / 8.2 x 10^-3 = frequency (16 x 10^-2)
frquency = 0.1524 hz
k = 2pi / wavelength = ( 2x 3.14 / 16 x 10^-2) = 39.25 rad/m
w= kv = 39.25 (2.439) = 95.73 apprx