February 20, 2017

Homework Help: Physic please help!

Posted by Mary on Saturday, September 29, 2007 at 9:32am.

The electrons in the beam of a television tube have a kinetic energy of 2.10 10-15 J. Initially, the electrons move horizontally from west to east. The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 5.00 10-5 T.

(a) In what direction are the electrons deflected by this field component?

due south (correct)
due west
due east
due north

(b) What is the acceleration of an electron in part (a)?

I have tried everything and all of my answers are wrong. In part a the correct answer is due south. Please help with part (b).

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