jatasia 3 years ago An electron enters midway through a uniform electric field of 198 N/C at an initial velocity of 416 m/s, as shown in the diagram. If the plates are separated by a distance of 2.02 cm, how far along the x-axis will the electron hit the bottom plate.

1. jatasia

2. nj1202

I have an anwer, but for some reason i'm feeling it doesn't make sense... and that's not good cuz i'm learning this too and i can't even remember how exactly xD

3. jatasia

well any help is fine with me :)

4. jatasia

oh i see do i have to convert any numbers

5. nj1202

Well everything seems alright as given. But i just ran another vertical displacement equation and if we substitute in the horizontal d i just found above, it doesn't reach the plate... so the above is not correct..

6. jatasia

yeah i tried it out :(

7. nj1202

Is this like an online thing where it tells you if you're right?

8. jatasia

yep

9. nj1202

okay, well let's work through this, it'll help us both. First we should find the acceleration of the electron, obviously in the y direction.

10. nj1202

|dw:1347416485153:dw|

11. jatasia

would we do the same for the x

12. nj1202

Not necessary i don't think. the particle will move at constant velocity forever in the horizontal, so i think we just need vertical here. now we need the time to get a position.

13. nj1202

|dw:1347417162425:dw|

14. nj1202

|dw:1347417419533:dw|

15. nj1202

i think this might be right xD but check it out.

16. jatasia

oh ok... and nope im not sure exactly whats not adding up though

17. nj1202

I don't know.. i followed what i think i'd do. idk what else to try xD

18. jatasia

me neither suppose im hopeless lol