Forces 1
An advantage of using an electromagnet over a really strong magnet.
What is it can be turned on and off (it can be easily demagnetized)?
A region around a magnet in which you can measure magnetic forces.
What is a magnetic field?
The net force on an object when the forces are balanced and the object does not change its motion.
What is zero?
The type of kinetic friction that opposes the motion of an object through a fluid.
What is drag?
The energy associated with how much an elastic object has been stretched or compressed.
What is elastic potential energy?
It converts electrical energy into mechanical energy.
What is an electric motor?
The region where magnetic field is the strongest.
What are the poles?
A place or object used for comparison to determine if something is in motion.
What is a reference point?
The forces that never change an object's motion.
What are balanced forces?
The energy associated with the position and arrangement of atoms within substances.
What is chemical potential energy?
Materials that allow electric charges to flow easily.
What are conductors?
The two factors that affects the gravitational attraction between two objects.
What are mass and distance?
The two factors that are used to describe a force.
What are magnitude and direction?
The place where an observer needs to be to observe an object dropped from a tower approach them.
What is standing on the ground beneath the tower?
The two factors that affect an object's gravitational potential energy.
What are mass and distance above a reference point
The reason why two magnets interacting with each other is example of a non-contact force.
What is are forces that act at a distance (they do not have to be touching)?
The energy conversion that takes place in a generator.
What is mechanical energy to electrical energy?
The tendency of an object to continue doing what it is already doing.
What is inertia?
This is when you add the forces together to calculate the net force acting on an object.
What is the forces are acting in the same direction on the object?
Electrical potential energy is the greatest when like charges are this distance in relation to each other.
What is close to each other?
The law of universal __________ states that all objects in the universe have an attraction to each other.
What is gravitation?
The electric charge that attracts positively charged objects.
What is negative?
The forces that have a net force of greater than zero and change the object's speed and/or direction?
What are unbalanced forces?
The direction and magnitude of a force that takes 15 seconds for a 45 newton force to move an object 20 meters to the left.
What is the direction is to the left and the magnitude is 45 newtons.
Magnetic energy is greatest when opposite poles are this distance in relation to each other.
What is as far away as possible while still interacting?