the images below show four pairs of magnets. the magnets in different pairs do not affect each other. all…

the images below show four pairs of magnets. the magnets in different pairs do not affect each other. all the magnets shown are made of the same material, but some of them are different sizes and shapes. think about the magnetic force between the magnets in each pair. select the pair with the magnetic force of smallest magnitude.

the images below show four pairs of magnets. the magnets in different pairs do not affect each other. all the magnets shown are made of the same material, but some of them are different sizes and shapes. think about the magnetic force between the magnets in each pair. select the pair with the magnetic force of smallest magnitude.

Answer

Explanation:

Step1: Recall magnetic - force principle

The magnetic force between two magnets depends on their pole strength and the distance between them. For magnets of the same material, the force is inversely proportional to the square of the distance between the magnets.

Step2: Analyze each pair

In Pair 1 and Pair 4, the distance between the magnets is 4.5 inches. In Pair 2 and Pair 3, the distance between the magnets is 2.25 inches. Since the force (F\propto\frac{1}{r^{2}}) (where (r) is the distance between the magnets), the larger the distance, the smaller the force. Among Pair 1 and Pair 4, we note that the size of the magnets also affects the force. Smaller magnets have weaker pole - strength. In Pair 4, the smaller magnet has a weaker magnetic field compared to the larger magnet in Pair 1.

Answer:

Pair 4