# Science Quiz / WJEC A Level Physics Definitions

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## Can you name the WJEC A Level Physics Definitions?

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A quantity that has magnitude only

A quantity that has magnitude and direction

A push or pull acting on a body from some external source

If Body A exerts a force on Body B then Body B exerts an equal and opposite force on Body A

The perpendicular distance x the force

Anticlockwise moments= clockwise moments

The point in the body at which the weight is considered to act

The shortest distance from A to B with the direction

Rate of change of distance

Rate of change of displacement

Rate of change of velocity

The constant maximum velocity of an object when the resistive forces on it are equal and opposite to the acclerating forces on it

The product of the magnitude of a force and the distance moved in the direction of the force

Force per unit extension

The amount of work a body can do

Energy can't be created or destroyed, only transferred from one form or another

Energy possessed by virtue of position

Energy possessed by virtue of an object's motion

Work done per second/ Energy transferred per second

The rate of flow of charge

The energy converted from electrical potential energy to some other form of charge per coulomb of charge flowing from one point to another

The current flowing through a metal wire at constant temperature

The p.d. across a conductor divided by the current through it

The temperature at which a material, when cooled, loses all electrical resistance

Electric charge cannot be created or destroyed nor can charge pile up anywhere

The energy converted from some other form to electrical potential energy per coulomb of charge flowing through the source

Time taken for one complete circuit/cycle

The number of cycles or circuits per second

The angle swept out by the radius in time t

An object's accleration is directed towards a fixed point and is proportional to its distance away from that point

The maximum value of an object's displacement from its equilibrium position

An object continues moving in a straight line or at reast, unless acted upon by a resultant force

The dying away of the amplitude of free oscillations due to resistive forces

When a driving force is applied to a system, causing it to vibrate with the applied force

The frequency of the applied force is equal to the natural frequency of the system, causing it to oscillate with maximum amplitude

mass x velocity

the rate of change of momentum for an object is proportional to the resultant force acting on it and moves in the direction of that force

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Created Dec 11, 2012
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