## Harder A-Z this is A-Z of Physics

### J

Yes the warmer water is denser and so the colder, less dense ice floats on the top.

j - the square root of minus one as used in the imaginary number theory method of alternating current analysis. Usually this symbol is i but this clashes with the symbol for current.

j - the square root of minus one as used in the imaginary number theory method of alternating current analysis. Usually this symbol is i but this clashes with the symbol for current.

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