A proton moves at 4.60 x 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.40 X 103 MC. Ignore any gravitational effects. (a) Find the time interval required for the proton to travel 5.50 cm horizontally. 110 x Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. ns (b) Find its vertical displacement during the time intenlal in which it travels 5.50 cm horizontally. (Indicate direction with the sign of your answer.) 5.3 x Your response differs from the correct answer by more than 10%. Double check your calculations. mm (c) Find the horizontal and vertical components of its velocity after it has traveled 5.50 cm horizontally. V = ( i + j) km/s