Posted by Dan on Monday, December 6, 2010 at 9:48pm.
The displacement from the equilibrium caused by a wave on a string is given by: y(x,t) = (0.00200 m)sin[(40m^1)x(800s^1)t]. What is the number of waves in 1 m?

Physics  Damon, Monday, December 6, 2010 at 10:02pm
when is 40 x = 2 pi (full wavelength) ??
when x = pi/20 meters
that is the wave length
How many wave lengths in 1 meter ?
20/pi