A Bar Magnet Is Placed Vertically with Its S Pole

question 58

Multiple Choice

A bar magnet is placed vertically with its S pole up and its N pole down. Its field at its center is:

• A) zero
• B) down
• C) up due to the weight of the magnet
• D) horizontal
• E) slightly below the horizontal

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Definitions:

Soils

The top layer of the earth's surface, composed of mineral particles, organic matter, water, and air, and capable of supporting plant life.

Grasslands

Large, open areas where the dominant vegetation consists of grasses, often found in regions with moderate to semi-arid climates.

Biological Magnification

The increasing concentration of a substance, such as a toxic chemical, in the tissues of organisms at successively higher levels in a food chain.

Food Chain

A series of organisms each dependent on the next as a source of food, representing the flow of energy and nutrients in an ecosystem.