Question

4. A proton (mass mp, charge e) is initially at rest at the origin when a uniform electric field is tumed on, increasing linearly from zero to Emax iin time T, then decreasing linearly to zero again in time T, as shown in the graph. Find expressions for the position and velocity as functions of time, for both halves of the time interval. If Emx 2000 volts/metre, and 7-2.00 μs. loo up the proton mass and charge, and calculate numerical values for the position and velocity at time t T.

Answer 1