February 23, 2017

Homework Help: physics

Posted by carlton on Monday, October 17, 2011 at 10:47am.

An electron of mass 9.11 10-31 kg has an initial speed of 3.00 105 m/s. It travels in a straight line, and its speed increases to 8.00 105 m/s in a distance of 10.0 cm.
(a) Assuming its acceleration is constant, determine the force exerted on the electron.
N (in the direction of motion)

(b) What is the ratio of this force to the weight of the electron, which we neglected?

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