Given that the force is
[tex]F=\text{ 6.1}\times10^{-20}\text{ N}[/tex]The strength of the magnetic field is
[tex]\begin{gathered} B\text{ = 0.13 mT} \\ =\text{ 0.13 }\times10^{-3}\text{ T} \end{gathered}[/tex]The speed is v = 4012 m/s.
The angle is
[tex]\theta=47^{\circ}[/tex]We need to calculate the charge of the meson.
The formula to calculate charge is
[tex]\begin{gathered} F=\text{ BqvSin}\theta \\ q=\frac{F}{Bv\text{ sin }\theta} \end{gathered}[/tex]Substituting the values, the charge will be
[tex]\begin{gathered} q=\frac{6.1\times10^{-20}}{0.13\times10^{-3}\times4012\times\sin 47^{\circ}} \\ =1.599\text{ }\times10^{-19}\text{ C} \end{gathered}[/tex]