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November 22, 2014

Homework Help: college physics

Posted by Ace on Tuesday, September 16, 2008 at 11:53pm.

The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small region in the neck of the picture tube. This region is
1.4 cm in length, and the electrons enter with a speed of 1 105 m/s and leave with a speed of 1.5 108 m/s.

a. What is their acceleration over this 1.4 cm length? Answer in units of m/s2.

b. How long is the electron in the accelerating region? Answer in units of s.

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