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May 29, 2015

Homework Help: physics

Posted by lauren on Saturday, March 13, 2010 at 10:05pm.

Gold ions (Au+) are accelerate to high speeds using electric fields.

These ions are then passed through a region where uniform electric E and magnetic B fields are present.

If the ions are traveling to the right, which configuration of E and B will serve as a velocity selector?

A. Electric field E up; Magnetic field B into the page

B. Electric field E down; Magnetic field B out of the page
C. Electric field E up; Magnetic field B out of the page
D. Electric field E down; Magnetic field B into the page
E. Both A and B
F. Both C and D

G. All of the above



i believe the answer is c, but im still a little unsure about this selection...

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