How to find potential difference between 2 parallel deflection plates

[firezap]

Homework Statement

Describe by pointform how to find potential difference between parallel deflection plates, ΔV₂ = ?
You don't have to solve.

ΔV1 = 1.38 kV
Δx = 5 cm
Δy = 0.49 cm
r = 5.2 cm
q = 1.6 x 10^-19 C
m = 9.11 x 10^-31 kg
k = 9 x 10^9 Nm^2/C^2

Homework Equations

ε = ΔV/d
W = ΔEe = qΔV
V = kq/r
Fe = kq1q₂/r^2
Fe = qε
Ee = kq1q₂/r

The Attempt at a Solution

i don't have the velocity so i don't know how. If i did have velocity i would find time.

 

[mrcotton]

I am on thin ice here, but its ok I am happy making a fool out of myself

Don't you use the potential between the cathode and the anode and the charge on the electron to calculate the energy gained in traversing the first part of your diagram and equate this to the kinetic energy to solve for the velocity as you leave the slit in the vertical anode

1/2 mv^2=eV

 

[firezap]

Ty what do I do after?

 

[firezap]

i have the initial velocity what do i solve for next? ε, acceleration, Fe, final velocity? how to find potential difference

 

[firezap]

never mind i got it.