\magnification=\magstep1


$$
v \quad = \quad \sqrt{ {{T}\over{\mu}} }
$$

$$
v \quad = \quad {{\omega}\over{k}}  
    \qquad \left( {{\rm radians/s}\over{\rm radians/m}} \right) 
$$

$$
\omega \quad = \quad (2 \pi {\rm \ radians}) \thinspace f
$$

$$
k \quad = \quad {{2 \pi \rm \ radians}\over{\lambda}} 
$$

$$
v \quad  = \quad {{2 \pi f}\over{2 \pi / \lambda}}
      \quad = \quad {f}{\lambda} 
$$

\bye
