What causes a magnetic field to form around certain metals, such as iron?

1 answer:

7 0

Option B. The majority of the domains are aligned.

Magnetic domains is a theory that explains the magnetization in ferromagnetic materials.

Magnetic domains are regions inside a magnetic material in which the magnetic moments of the atoms are parallel, have the same direction. Different magnetic domains have different directions but when the directions of most magnetic domains point in the same direction then the magnetization occurs.

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A metal ball has a mass of 2.05 kg and a volume of 6.8 cm. What is its density? Remember

kogti [31]

Answer:

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7 0

3 years ago

A dockworker loading crates on a ship finds that a 21-kg crate, initially at rest on a horizontal surface, requires a 73-N horiz

Nataliya [291]

1) Static friction coefficient: 0.355

The crate is initially at rest. The crate remains at rest until the horizontal pushing force is less than the maximum static frictional force.

The maximum static frictional force is given by

$F_s = \mu_s mg$

where

$\mu_s$ is the static coefficient of friction

m = 21 kg is the mass of the crate

g = 9.8 m/s^2 is the acceleration due to gravity

The horizontal force required to set the crate in motion is 73 N: this means that this is the value of the maximum static frictional force. So we have

$F_s=73 N$