A particular alnico (aluminum, cobalt, nickel, and iron) bar magnet (magnet A) has a mass of 10 grams. It produces a
magnetic field of magnitude 6 × 10−5 T at a location 0.19 m from the center of the magnet, on the axis of the magnet.
(a) Approximately what is the magnitude of the magnetic field of magnet A a distance of 0.38 m from the center of
the magnet, along the same axis?
(b) If you removed the original magnet and replaced it with a magnet made of the same material but with a mass of 50
grams (magnet B), approximately what would be the magnetic field at a location 0.19 m from the center of the
magnet, on the axis of the magnet?
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