The metal in a chunk of copper or iron is composed of

A) crystals.
B) non-crystalline fibers.
C) amorphous particles.
D) none of the above


Answer: A

Physics & Space Science

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A squat refrigerator magnet sits on a table with its north pole facing up and its south pole down. We push a ring of wire lying on the table directly toward the magnet. What direction does current flow in the ring when viewed from above? (A wooden table will not affect the magnet’s field.)

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D. 85 kg
E. 69 kg

Physics & Space Science