What is the distance between the two children(scale is in centimeters)?
A string is stretched along the x-axis. There is a transverse disturbance along the string given by the equation ϕ(x,t)=4sin(πx3)cos(10πt)where x is measured in centimeters and t in second. Both waves moving towards each other create this disturbance. Assume the velocities and amplitudes are equal for the two waves.