fields Flashcards
field
region in space where an object experiences a force
electric fields
region in space where an electric charge experiences a force
runs from positive to negative
The direction of the electric field at a point is the direction that a positive test charge would move if placed at that point
coulombs law
2 point charges exert forces on each other. force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them
newtons law of universal gravitation
Every particle with mass in the universe attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres
weight (Fg)
the gravitational force the Earth exerts on any object on or near its surface
gravitational field
the force acting per unit mass (definition)
a region in space where a mass will experience a force
difference between mass + weight
Mass is a fundamental measurement of how much matter an object contains. Weight is a measurement of the gravitational force on an object. It not only depends on the object’s mass, but also on its location.