Week 18 Practice: INtroduction to Magnetism

Front

What materials are typically attracted to magnets?

Back

Iron, nickel, and cobalt are typically attracted to magnets.

Front

How can the magnetic field around a magnet be visualized?

Back

The magnetic field around a magnet can be visualized using iron filings.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 0.5 * mass (m) * velocity (v)^2.

Front

Calculate the kinetic energy of a 0.40 kg bird flying at 8.0 m/s.

Back

The kinetic energy is 12.8 J.

Front

What is the definition of matter?

Back

Matter is anything that has mass and takes up space.

Front

What is the relationship between air and matter?

Back

Air is a type of matter that has weight and occupies space.

Front

What is the evidence that air has weight?

Back

The weight of the ball increases by 0.5 lbs each time more air is pumped into it.

Front

What is the kinetic energy of a golf club weighing 0.75 kg swung at 60 m/s?

Back

The kinetic energy is 1350 J.

Front

What is the principle of magnetism?

Back

Magnetism is a force that can attract or repel certain materials, primarily metals like iron.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected.