PLEASE HELP Proton in an electric field

A proton of mass 1.67 x 10-27 kg enters the region between two parallel plates a distance 38.0 cm apart. There is a
uniform electric field of 3.00 x 104 V/m between the plates. If the initial speed of the proton is 2.00 x 106m/s what is it's
final speed?

The two required components for a generator are

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.