(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electron with the kinetic energy of 2.6e-6 Joules is moving to the right along the axis of a cathode ray tube. the length of the cathode ray tube is 16 cm and the length of the deflection inside the cathode ray tube is 4 cm. The electric field = 2e4*N/C. Everywhere else the electric field is zero.

a:) how far is the electron from the axis of the tube when it reaches the end of the plates?

my solution:

Energy =.5*m*v^2 give the initial velocity.

(2*(2e-16 Joules)/(9.11e-31 kg))^.5=v

to find time, I used kinematic equation

x=x(0)+vt --> x-x(0)/v=t --> 16 m/v=t x isthe total length of the cathode ray tube

a=E*q/m(electron)

y=.5*a*t^2

not surehow to find x-component for the velocity, y or time t. Any other variables in this problems I should consider?

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Electric field question

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