Aria has designed a laboratory apparatus which can be used to decelerate certain charged particles moving at high speeds. While calibrating the apparatus, Aria sends an ion with 11 protons, 9 neutrons, and 5 electrons into it. The ion
enters with a speed of 2.02 x 10 m/s and exits with a speed of 7.54 x 104 m/s.
If the ion is traveling in the +y direction, and the apparatus is 2.58 m across, calculate the magnitude and direction of the
electric field inside the apparatus.
Write your result in unit vector notation, assuming units of Newtons per Coulomb.

it will be pushed away from the source of the electric field. a negative charge in a cloud induces a positive charge in the ground below the cloud.

explanation:

photocells convert light energy to electricity

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me