which device can be used to determine the polarity of an unmarked magnet?
A. Charged glass stirring rod
B. Gold-leaf electroscope
C.a sprinkle of iron filings
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which device can be used to determine the polarity of an unmarked magnet?
A. Charged glass stirring rod
B. Gold-leaf electroscope
C.a sprinkle of iron filings
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Answer:
b po
Explanation:
sana po makatulong po