A magnet sitting next to a wire does not induce a current in the wire because <span> the magnet is very small and short compared to the coil radius. If you pretend it's two individual monopoles, they're only a few mm apart, so at several cm there's almost perfect cancellation of the fields.</span>
Answer:
B. an action-reaction force pair
<span>Sound travels fastest through solids, slower through liquids and slowest through gases.
Answer: Cast Iron, D.
</span>
The correct answer is mass
