A wave disturbance in a medium is described by `y(x, t) = 0.02 cos(50pit + (pi)/(2))cos(10pix)` where `x and y` are in meter and `t` is in second`
A. A node occurs at `x = 0.15 m`
B. An antinode occurs at `x = 0.3 m`
C. The speed pf wave is `5 ms^(-1)`
D. The wavelength is `0.2 m`.
