fields Flashcards

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1
Q

field

A

region in space where an object experiences a force

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2
Q

electric fields

A

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

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3
Q

coulombs law

A

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

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4
Q

newtons law of universal gravitation

A

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

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5
Q

weight (Fg)

A

the gravitational force the Earth exerts on any object on or near its surface

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6
Q

gravitational field

A

the force acting per unit mass (definition)

a region in space where a mass will experience a force

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7
Q

difference between mass + weight

A

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.

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