A magnet will become weaker if it is
A) dropped on a hard surface.
B) held in a hot flame.
C) either
D) neither
Correct Answer:
Verified
Q1: Magnetism is due to the motion of
Q7: A compass needle in a magnetic field
Q8: Magnet A has twice the magnetic field
Q9: Compared with the huge force that attracts
Q10: A strong magnetic field easily penetrates
A)human flesh.
B)plastic
Q10: Refrigerator magnets are typically
A)short range.
B)long range.
C)none of
Q13: An iron rod becomes magnetic when
A)opposite ions
Q14: Unlike electric charges,magnetic poles cannot be
A)located.
B)isolated.
C)destroyed.
Q17: The ultimate source of all magnetism is
A)tiny
Q23: Wood does not have magnetic properties because
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