a piece of metal is moved close to a magnetic compass needle and south end of compass needle is attracted towards it. from this:
(a) the metal iron
(b)the metal is magent
(c)the compass needle has ost its magnetisim
(d) none of the above
2007-06-05 04:19:14 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
If the south end ONLY is attracted, then the answer is B. If both ends are attracted, then the answer could be A, but is not B, unless C is also true.
This question seems quite jumbled up. Is this the whole question, exactly as posed?
2007-06-05 05:15:36 · answer #1 · answered by Carl M 3 · 0⤊ 0⤋
The best answer is (a) the metal is iron. However this is not the only metal that would do this. Nickel can also move a compass needle, and possibly cobalt. But answer (b) is also true if the south end of a magnet is brought close (South, because the south end is actually a north pole, since the other end is attracted to the north pole of the earth, and opposites attract). Even (c) can be true if either end of a magnet is brought close, and the south end is closest to the magnet. But I'll still stick with answer (a).
2007-06-05 11:34:29 · answer #2 · answered by Don E Knows 6 · 0⤊ 0⤋
The question doesn't really make sense, but if the south end of a compass needle is attracted towards a piece of metal, many things could have happened.
Most likely, the piece of metal is ferromagnetic and magnetized. I say ferromagnetic because it doesn't necessarily need to be iron, metals like steel (part iron) can be magnetized.
Another possible cause could be that the compass needle got magnetized incorrectly or marked incorrectly.
2007-06-05 11:29:57 · answer #3 · answered by jameshedwardsiv 2 · 0⤊ 0⤋
If the compass needle, which is a magnet, is attracted to the metal bar, then the metal bar is a magnet.
2007-06-05 13:15:34 · answer #4 · answered by science teacher 7 · 0⤊ 0⤋
It's definitly C) The needle has magnetic properties which cause it to spin when the poles are lined up the same with the earths magnetic zones.
2007-06-05 11:27:59 · answer #5 · answered by Anonymous · 0⤊ 0⤋
The answer is B. The metal is magnetized, and you're moving its 'north' pole in the vicinity of the compass.
Doug
2007-06-05 11:35:25 · answer #6 · answered by doug_donaghue 7 · 1⤊ 0⤋
Is that the exact wording of the original question? with the information given, it _could_ be any of the first three, since we can't positively identify which of the first three, then "(d) none of the above" could argualby be the best answer.
2007-06-05 11:43:05 · answer #7 · answered by tinkertailorcandlestickmaker 7 · 0⤊ 0⤋