Calculate Speed of Electron Reaching Plate B in Parallel Plates

[unhip_crayon]

Homework Statement

Two oppositely charged parallel plates, 13.0 cm apart, have a uniform electric
field between them. Vb − Va = +25.0 V. An electron with a mass of
9.11 × 10−31 kg and a charge of −1.60 × 10−19 C is released from rest at plate a.
Calculate the speed of the electron when it reaches plate b.

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a b

The Attempt at a Solution

E=V/d = 25/.13 = 192.3J

I also need you need to find accel. but I am not sure how.

please help, thanks

 

[nrqed]

Homework Statement

Two oppositely charged parallel plates, 13.0 cm apart, have a uniform electric
field between them. Vb − Va = +25.0 V. An electron with a mass of
9.11 × 10−31 kg and a charge of −1.60 × 10−19 C is released from rest at plate a.
Calculate the speed of the electron when it reaches plate b.

| |
| |
| |
a b

The Attempt at a Solution

E=V/d = 25/.13 = 192.3J

I also need you need to find accel. but I am not sure how.

please help, thanks

What is the equation for the electric force on a charge in an electric field?

 

[unhip_crayon]

E=kq/d^2

 

[pam]

Use conservation of energy.

 

[unhip_crayon]

oh, and the answer is

2.96 × 10^6 m/s

 

[unhip_crayon]

Vq=1/2mv^2But I am still getting the wrong answer