Please help with all these questions thank you so much

12. A proton travelling at 7.40 x 105 m/s passes through the electric field of two parallel plates as shown below. The voltage between the plates is 5.80 x 10? V. P 7.40 x 105 m/s v = AV = 5.80 x 102 V What is the speed of the proton after passing through the 2nd plate? 13. An electron travelling at 4.26 x 10 m/s enters an electric field of strength E = 1.75 x 105 N/C between two charged parallel plates, as shown below. 2.50 cm + + + + + + F dy = ? v = 4.26 x 10' m/s E = 1.75 x 105 N/C Assuming the electron enters the field parallel to the plates, how much deflection dy from the original path occurs once it exits the field? 14. The horizontal deflection of a beam of electrons in a cathode ray tube is 2.40 cm when the voltage on the deflecting x-plates is 75.0 V and the accelerating voltage is 4.80 x 102 V. Determine the new deflection when: a) the accelerating voltage is tripled, while the deflecting voltage is doubled. a) 2 marks b) the accelerating voltage is reduced to 3.00 x 102 V, while the deflecting voltage is reduced to 25.0 V