Electric charge
An attractive force that pulls objects toward each other
What is gravity
What is exert
What does the law of universal gravitation state?
There is a gravitational force between any two objects with mass.
define friction
a force that resist motion between two opposing surfaces
what is the value of acceleration due to gravity
9.8 m/s^2
Any material that attracts iron or materials containing iron
What is a magnet?
An object becomes ______ charged when it loses electrons
Positively
Identify two factors that increase the electric force between objects
The distance between the charges and the strenght of the charges
identify what two factors make the force of attraction vary
the mass of the objects and the distance between them
What determines whether an object is magnetic
the arrangement of domains
What type of friction is air resistance
Fluid friction
Simply the presence and/or the flow of electric charge
What is electricity
Name at least 2 differences between mass and weight
mass measures the amount of matter in an object , it is not a force, and can be measured in mg ,g and kg
weight is the force of gravity exerted on and object, it is a force and it is measured in Newtons
How can a magnet become demagnetized? (name one)
- Drop a magnet/ hitting it too hard
- Putting the magnet in a strong magnetic field opposite to its own
- Increasing the temperature of a magnet
Draw and label the electric charge, electric force and electric field of electric charges that attract
....