The region where a magnetic force is exerted is the ?

North and south magnetic poles

Explanation:

All magnets have north and south magnetic poles. The poles are regions where the magnet is strongest. The force that a magnet exerts is called magnetic force. The force is exerted over a distance and includes forces of attraction and repulsion.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation:

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