To determine the Young's modulus of a wire, the formula is \[Y = \frac{F}{A}:\frac{L}{{\Delta L}};\] where \[L\] = length, \[A = \]area of cross-section of the wire, \[\Delta L = \]change in length of the wire when stretched with a force \[F\]. The conversion factor to change it from CGS to MKS system is