A student decided to conduct an investigation using two bar magnets in order to further investigate and explain the changes in the reading on the balance. Two bar magnets were placed on a table with opposite poles facing each other. A sheet of paper was paced on top of the magnets and iron filings were sprinkled on top of the paper to help visualize the field interactions. Which image best shows how magnetic fields interact when opposite poles face each other?

the poles when opposing each other will push each other away and the iron fillings as well but the poles pulling each one towards each other causes it to have a stronger magnetic field.

Explanation:

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electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2