What is Force?
Force is a?
Push or Pull
Magnets stick to objects that contain
Iron
A system that includes a complete pathway through which electric current flows
Electric Circuit
1) renewable
2) nonrenewable
Force is measured in?
Newtons
All magnets have what?
a north and south pole
Surrounds a wire through which electric current is flowing
Magnetic Field
every energy use can be described as a series of ...
energy transfers
The force that acts to oppose a force acting to put a mass in motion...
Friction
Magnets are surrounded by a?
Magnetic Field
The magnetic field produced by a current- carrying wire can .... in a piece of iron or steel
induce magnetism
energy cannot be .... or ... , only ...
created, destroyed, transfered
Sum of the forces acting on a mass
Net Force
Magnetic materials may become ... when they interact with magnetic fields.
Temporary Magnets
... is made by sending electric current through an insulated wire wrapped around an iron core
electromagnet
electric generators transfer energy from ... to ...
kinetic to electrical
If there is a force of 100N to the right on a box and a force of 500N to the left. What is the total net force on the box? Which direction will the box move?
400N
the left
The magnitude of the magnetic force between two interacting magnetic fields ... as the distance between them ...
decreases/increases
increases/decreases
The strength of magnetism induced in the core of an electromagnet increases with...
1) number of winds of wire
2) about of electricity flowing
3) iron content of core
commutator