2023 Physical Science BM 2

Front

What are magnetic domains?

Back

Magnetic domains are regions within a material where the magnetic moments of atoms are aligned in the same direction.

Front

What determines if a material is magnetized?

Back

A material is magnetized if it has a net magnetic moment, meaning the magnetic domains are aligned.

Front

How many wavelengths are represented between two points in a wave?

Back

The number of wavelengths is the count of complete wave cycles between the two points.

Front

What two factors are needed to determine gravitational force between two objects?

Back

Distance and mass are needed to calculate the gravitational force between two objects.

Front

What does gravitational force depend on?

Back

Gravitational force depends on the mass of the objects involved.

Front

What happens to the speed of a motor if the number of batteries in a circuit is increased?

Back

The motor would run faster because the increased electrical force enhances the magnetic force in the motor.

Front

What is the formula for gravitational force?

Back

The formula for gravitational force is F = G * (m1 * m2) / r^2, where F is the force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

What is the relationship between current and magnetic force in a motor?

Back

In a motor, an increase in current leads to an increase in magnetic force, which can increase the motor's speed.

Front

What is a wavelength?

Back

A wavelength is the distance between two consecutive points that are in phase on a wave, such as crest to crest or trough to trough.

Front

What is the significance of net magnetic moment in materials?

Back

The net magnetic moment indicates whether a material is magnetic or non-magnetic based on the alignment of its magnetic domains.