The electromagnetic launcher, or rail gun, comprises of two parallel conducting rails across which is laid a conducting bar that serves as a projectile. To launch this projectile, the rails are immersed in the magnetic field and a current is sent via the rails and the bar. The magnetic force on the current in the bar then accelerates the bar (that is, in real rail guns of this type, the magnetic field is itself generated by the current in the rails; however let us avoid this complication). Assume that the magnetic field has strength of 0.20 T and the bar consists of a length of 0.10 m and a mass of 0.20 kg. Avoid friction. Determine what current should you send through the bar to give it an acceleration of around 1.0x10^5 m/s^2?