A proton is released from rest at the positive plate of a parallel-plate capacitor. It crosses the capacitor and reaches the negative plate with a speed of 48000 m/s. What will be the final speed of an electron released from rest at the negative plate?

P3a please help me with the answer and full solution

1. A 500.0 N student standing on a scale in an elevator notices that the scale reads 550.0 N. a. From this information, the student knows that the elevator’s acceleration isA) upward.B) downward.C) The student cannot tell whether the elevator is accelerating upward or downward.b. From this information, the student knows that the elevator’s velocity isD) upward.E) downward.F) The student cannot tell whether the elevator is moving upward or downward.2. You swing a bat and hit a heavy box with a force of 1600 N. a. If the box moves when you hit it, the force the box exerted on the bat when hit isA) greater than 1600 N if the bat bounces back.B) greater than 1600 N.C) exactly 1600 N.D) less than 1600 N *please write a detail as much as possible for both question

A toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a breaking strength of 40. N. Calculate the maximum speed the cart can attain without breaking the string. 3.