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Chemistry 7 Online
OpenStudy (anonymous):

If the strength of the magnetic field at B is 3 units, the strength of the magnetic field at A is _____. 9 units 12 units 13 units

OpenStudy (dtan5457):

You would use that 3 and multiply it by 4 so it gets the entire area of (2m)

OpenStudy (anonymous):

so 12?

OpenStudy (dtan5457):

Yea

OpenStudy (anonymous):

thnx

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