Non-Contact Vs. Contact Forces Flashcards
The area around an electric charge where the charge can exert electrical force on other charges
Electrical field
The area around a magnet where the magnet can exert magnetic force on other magnets
Magnetic field
Amount of matter in an object. Always constant–does not depend on gravity
Mass
A measure of the amount of gravitational force on an object–depends on mass and the strength of the gravitational field
Weight
A machine that uses spinning electromagnets to produce electricity– converts mechanical energy to electrical energy
Generator
A machine that uses the flow of magnetic field produced by flowing electricity to cause an electromagnet to spin–converts electrical energy to mechanical energy
Motor
A magnet created by an electrical current flowing through a wire
Electromagnet
The area around an object that has mass where the object can exert gravitational force on other objects with mass
Gravitational field
What two things affects the strength of a non-contact force like gravitational force?
Mass and distance
In electrical force,_____poles attract and______poles repel
Like; opposite
In magnetic force,______poles attract and______poles repel
Opposite; like
Every magnet has both a ___ ______ And a ____ _______. A magnet cannot have only one
Negative pole, positive pole
Only________can be transferred when rubbing two objects together
Electrons
Formula for finding gravitational forces
Mass1•Mass2
———-
distance2
Find gravitational force
Mass1=2 Mass2=6
Distance= 2
3
