Please provide explanation to the following seven questions. attached photos. I got a zero in them but I would like to find out the answers to prepare for the final exam. Thanks!

An electron enters an electric field with an initial velocity of 68731 m/s moving in the same direction as the field direction. It moves through a potential difference of magnitude 2 mV. What is the final speed of the electron? Determine the speed of an alpha particle with a kinetic energy of 13.2 e'U'. A positively charged object is brought near to. but does not touch, one end of a neutral metal rod on an insulated stand. The opposite end of the metal rod is grounded. The ground is removed, and then the positively charged object is removed. Question 11 D l 1 point A positively charged object is brought near to. but does not touch, one end of a neutral metal rod on an insulated stand. The opposite end of the metal rod is grounded. The ground is removed, and then the positively charged object is removed. As a result of the procedure described above. the metal rod will I I have a net charge of zero I I be neutral {II have a positive net charge I I have a negative net charge Three point charges are fixed in place in the right triangle shown below, in which q1= 3.7 uC and q2 = -4.4 uC. What is the magnitude of the net force on the +1.0 uC charge due to the other two charges? Round your answer to have two decimai places. A proton enters a parallel plate system moving with an initial velocity of 7253 m/s perpendicular to the electric field. The proton enters at the the positive plate and the electric field between the plates moves it in the direction of the negative plate. The plate separation distance is 13.1 mm and the potential difference between the plates is 6.1. How far in mm along the negative plate does the proton land? Give your answer in mm and round to have two decimal places. An electron is fired horizontally at a velocity of 3.5 x 106 m/s in between two oppositely charged plates. The electron enters the system 2.0x10'3 m from the bottom plate as shown below. The plates have a separation of 1.0 x 10'2 m and a potential difference of 2.0 x 102 V across them. How far along does the electron travel horizontally before it collides with a plate? 1.0 110\" m