Electronic Principles
The north pole of a magnet is the one:

that would be attracted to the earth's north magnetic pole
that would be attracted to the earth's south magnetic pole
that would be repelled by the south pole of another magnet
None of these
that has its molecules arranged in a random pattern

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Electronic Principles
What is a negative ion?

An atom that contains more electrons than neutrons
An atom that contains more protons than electrons
An atom that contains more protons than neutrons
An atom that contains more electrons than protons
None of these

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