Homework Help: Bio

Posted by tiffany on Thursday, January 20, 2011 at 11:12am.

An electromagnet can be made by wrapping insulated wire around an iron nail and connecting the ends of the wire to a 6-volt battery. HYPOTHESIS: Increasing the number of coils of wire wrapped around the nail increases the strength of the electromagnet, as measured by the number of paper clips the magnet can pick up. Identify the independent and dependent variables.

Bio - SraJMcGin, Thursday, January 20, 2011 at 11:30am
Perhaps some of the following will help:

http://search.yahoo.com/search?fr=mcafee&p=how+to+identify+independent+%26+dependent+variables

Sra

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