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Physics, 08.10.2019 16:00 newjersey4015

Ahorseshoe magnet and a bar magnet are made of the same amounts of the same kind of material. why is the horseshoe magnet stronger than the bar magnet?
a. the horseshoe magnet has less mass.
b. the horseshoe magnet is longer.
c. the poles of the horseshoe magnet are closer together.
d. the horseshoe magnet has more poles.

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