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Answer the following questions. (a) Classify the following substances as magnetic or non-magnetic. copper, phosphorus, iron, cobalt, soil, water, silver mercury, nickel, wood, oil. (b) In olden times, how as a magnet placed in a compass? |
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Answer» Answer the following questions. (a) Classify the following substances as magnetic or non-magnetic. copper, phosphorus, iron, cobalt, soil, water, silver mercury, nickel, wood, oil. (b) In olden times, how as a magnet placed in a compass? |
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