Question:
The equation of a wave travelling on a string stretched along the $X$-axis is given by $\mathrm{Y}=\mathrm{A} . e^{-\left(\frac{x}{a}+\frac{t)^{2}}{T}\right.}$
(a) Write the dimensions of $A$, a and $T$.
(b) Find the wave speed
(c) In which direction is the wave travelling
(d) Where is the maximum of the pulse located at $t=T$ ? At $t=2 T$ ?
Solution:
at
$t=T ; x=-a$
$t=2 T ; x=-2 a$