The force that causes a mass of one kilogram to have an acceleration of one meter per second every second
Newton
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The gravitational force on a body
Weight
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a pair of equal and parallel but opposite forces.
Couple
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Force x perpendicular distance
moment
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Mass per unit volume
Density
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Force per unit area
Pressure
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The work done when a force of 1 newton moves its point of application 1 meter in the direction of the force
Joule
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Stored ability to do work
Energy
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Describes the situation in a closed system where energy may be converted from one form to another but not stored or created
Conservation of energy
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The energy stored in an object by virtue of its position in a gravitational field
Gravitational Potential energy
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Work an object can do by virtue of its speed
Kinetic energy
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Rate of doing work
Power
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One joule per second
Watt
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Force per unit cross sectional area
Stress
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Extension per unit length
Strain
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Total charge supplied by a current of one amp in 1 second
Coulomb
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The energy transferred per unit charge when one other type of energy is converted into electrical energy
Electromotive force
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This law states that the current through a conductor is proportional to the potential difference across it provided physical conditions remain constant
Ohms Law
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A point in a stationary wave at which there is no displacement of the particles at any time
Node
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where the displacement of the particles in a stationary wave varied by the maximum amount
Antinode
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The energy an electron acquires when it rises through a pd of 1 volt
electronvolt
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The energy an electron acquires when it rises through a pd of 1 volt
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