If a bar magnet is falling through a loop of wire, the induced current in the loop of wire sets up a field which exerts a force on the magnet. This force between the magnet and the loop will be repulsive when:
a. the magnet enters the loop.
c. never.
b. the magnet is leaving the loop.
d. the magnet is halfway through.
Question 2
The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following?
a. only solids
c. only gases
b. only liquids
d. solids, liquids and gases
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