Tuesday

March 3, 2015

March 3, 2015

Posted by **Lauren** on Friday, February 26, 2010 at 3:16pm.

at 8.0 × 10^7 m/s. (top plate is positive, electron is 1.0cm from each plate..) The potential difference between the plates is 6.0 × 10^2 V. Calculate...

(a) the vertical deflection of the electron from its original path.

(b) the velocity with which the electron leaves the parallel plate apparatus.

----

Im really confused with questions asking for vertical deflection...im not sure what formula to use..should i be using the formula for energy where U=mgh and solve for h? this is the only thing i can think of..any help would be great

- Physics -
**drwls**, Friday, February 26, 2010 at 4:25pmThe vertical motion will be towards the positively charged plate due to the E field in that direction. The acceleration rate will be

a = F/m = e E/m = e V/(d m)

where d is the plate separation (0.2 m), V is the voltage, and m is the electron mass.

Once you know a, calculate how far it deflects vertically using

y = (1/2) a t^2

t is the time of flight going through the plates, t = 0.10 m/8*10^7 m/s

The horizontal velcoity component will not change. The vertical velocity acquired is a * t

**Answer this Question**

**Related Questions**

Physics - An electron is released from rest at the negative plate of a parallel ...

Physics #48 - An electron is released from rest at the negative plate of a ...

physics - The physics of an electron moving from one plate to another. An ...

Physics. Speed of electron... - An electron is released from rest at the ...

physics - An electron is released from rest at the negative plate of a parallel ...

physics - The plates of a parallel plate capacitor are separated by a distance ...

physics - An electron is released at the negative plate of a parallel plate ...

physics - Two parallel plates, separated by 10 mm, are charged to a potential ...

physics - An electron reaches a speed of 3.0 × 107 m/s when released beside the ...

Physics - An electron is released from rest at the negative plate of a parallel ...