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You have a battery, copper wire, and an iron u-shaped bar.
How can you use the materials to make an electromagnet?

see below

Explanation:

First: Leave a couple inches of wire loose at one end and wrap most of the rest of the wire around iron  u-shaped bar and make sure not to overlap the wires.

Second:Cut the wire (if needed) so that there is about a couple inches loose at the other end too.

Third: Now remove about an inch of the plastic coating from both ends of the wire and connect the one wire to one end of a battery and the other wire to the other end of the battery.

6 cos 34, 6 sin 34 trig

which three statements are true about all alloys?