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34 votes
34 votes
Elsa has three metal blocks that look the same.

• One of the metal blocks is made of aluminum.
• One of them is made of iron and has been magnetized.
• One of them is made of iron and has not been magnetized.
Elsa does not know which is which.
Describe how she could use a bar magnet to find out which is which.

User Turtlebender
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1 Answer

21 votes
21 votes

Answer:

Aluminium is lightweight

Iron is magnetic

and one is not magnetic

User Joakim Syk
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2.9k points