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A) move preferentially in directions perpendicular to the magnetic fields
B) move preferentially along magnetic field lines
C) move freely in all directions
D)cannot move at all
E) none of the above

2007-11-12 10:13:15 · 5 answers · asked by webb_ar 1 in Science & Mathematics Astronomy & Space

5 answers

A) is the answer. Charged particles are either repelled or attracted to a magnetic field, at 90 degrees to the field lines, depending on their positive or negative charge.

2007-11-12 11:51:09 · answer #1 · answered by straightshooter 5 · 0 1

During an MRI (Magnetic Resonance Imaging) scan, when the body is placed in the magnet, all the negatively charged electrons align themselves with the magnetic field, This is the principle on which the scanner works.

A radio frequency (RF) is then sent into the body at the frequency of the hydrogen ion and it resonates.

When the (RF) is swithched off, the Hydrogen ions give up the energy they have absorbed, this is picked up by the receiver and translated into pictures by computer.

2007-11-12 14:13:24 · answer #2 · answered by Anonymous · 0 0

There are 2 main particles that come off the sun. The electron or beta particle which is negative in charge and are attracted to the north pole. There is the alfa particle which is positive charge and are attracted to the south pole ,which makes it positive. This is what provides the power to hold the ozone layer where it will protect us.

2007-11-12 10:54:28 · answer #3 · answered by JOHNNIE B 7 · 0 0

i think either c or d cuz they are neutral so they don't react to a magnetic field...

2007-11-12 10:17:19 · answer #4 · answered by Anonymous · 0 0

cannot move at all

2007-11-13 15:59:49 · answer #5 · answered by Anonymous · 0 0

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