- #1

Triple88a

- 18

- 0

## Homework Statement

You are trying to separate 2 types of ions (fast and slow). The fast ones travel at 1000m/s and the slow ones travel at 100m/s. At the beginning you have 2 plates. One has + and the other one has negative charge. The size of the plates is 5cm and they are 3 cm apart. What will the acceleration have to be between the 2 plates that will put the fast and slow ions 2 cm apart at 50cm once out of the plates.

Remember once the ions are out of the plates, they will not accelerate any more.

## The Attempt at a Solution

I drew it out.

The reds are the ions. The blue box at the bottom is the emitter. The 2 gray ones are the charged plates that will accelerate the ions.

From what i know there will be 2 different times since the ions travel at different speeds

For the fast one i calculated

.5m / 1000m/s = .0005s

for the slow one i got

.5m / 100m/s = .005s

From here on out, I'm stuck and have no idea what to do next.

Thanks in advance.