15 Flashcards
What is the resultant (net) force when multiple forces are acting on an object?
The overall force acting on an object.
What is the resultant force when 50N and 100N forces act in opposite directions?
50N to the left, unbalanced.
What happens to the resultant force when a constant speed object is stationary?
Resultant force is zero, balanced.
Which elements are considered magnetic?
- Iron
- Nickel
- Cobalt
What is the relationship between unlike poles of magnets?
They attract each other.
What happens between like poles of magnets?
They repel each other.
Name three common shapes of magnets.
- Bar
- Horseshoe
- Disc
What is an example of a magnetic element?
Iron.
What is an example of a magnetic compound?
Steel.
How can you make a magnet using stroke material?
Stroke material to align domains.
What effects can degrade a magnet’s magnetism?
- Dropping
- Heating
- Striking
What characterizes stronger magnets?
Larger magnetic range and magnetic ability.
What happens to the domains in an unmagnetized material?
They are not in order.
What is the state of domains in a magnetized material?
They are aligned.
What are the characteristics of magnetic fields?
- Never cross or overlap
- Continuous lines
- Outside = N → S
- Inside = S → N
- Closer lines = stronger force
How does Earth function in relation to compasses?
Earth acts as a magnet.
What is one method to increase the strength of an electromagnet?
- Add more coils of wire
- Increase the electric current
True or False: Magnetic fields can cross each other.
False.
