There are actually only three substances that form natural magnets: iron, nickel, and ____.
A) copper
B) lead
C) cobalt
D) magnesium
Correct Answer:
Verified
Q5: The two factors that determine the number
Q6: Because they are always able to align
Q7: When a coil is wound around a
Q8: A speaker uses three separate magnets. One
Q9: Magnetic lines of flux repel each other
Q11: Energy is required to create a magnetic
Q12: A basic law of physics states that
Q13: The angular difference between true north and
Q14: For a magnet with an area of
Q15: When an object is to be demagnetized,
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