An object will remain at rest or continue travelling at a constant velocity unless acted upon by an external force
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Newton's 2nd Law
The net force acting upon an object is equal to its rate of change of momentum
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Newton's 3rd Law
When two bodies interact the forces they exert are equal and opposite
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Newton's Law of Gravitation
Any two point masses attract each other with a force that is directly proportional to their masses, and inversely proportional to the sqr of their seperation
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Charles' Law
The volume occupied by a gas at a constant pressure is directly proprtional to its thermodynamic (absolute) temperature
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Boyles' Law
The pressure exerted by a fixed mass of gas is inversely proportional to its volume, provided the temperature remains constant
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Latent heat of vapourisation
The energy absorbed by a substance to change its state from liquid to gas without a change in temperature
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Latent heat of fusion
The energy absorbed by a substance to change its state from solid to liquid without a change in temperature
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Frequency
The number of oscillations per unit time. unit: Hz
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Period
Time taken by an object to complete 1 orbit OR to complete 1 oscillation
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Phase Difference
The fraction of an oscillation between the vibration of two oscillating particles
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Amplitude
The maximum displacement of a particle from its equilibrium position
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Angular displacement
The angle through which an object moves in a circle
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Angular frequency
The rate of change of angle expressed in radian per second. Ѡ = 2*π/T
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Natural frequency
The unforced frequency of a freely oscillating object
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Resonance
The forced motion of an oscillator. Max amplitude is achieved when the forcing frequency matches the oscillators natural frequency
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Simple Harmonic Motion
Motion of an oscillator where its acceleration is directly proportional to its displacement from equilibrium position and acceleration is directed towards the equilibrium position
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Centripetal force
The net force acting on an object moving in a circle; always directed towards the centre
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Geostationary orbit
Orbit of an artificial satellite which has a period of 1 day. therefore the satellite remains above the same point on the Earths equator
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Gravitational field strength
The gravitational force exerted per unit mass. g=F/m
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Radian
The angle subtended at the centre of a circle by an arc of equal length to the radius
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Damped
Describes an oscillatory motion where amplitude decreases with time due to energy losses
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Linear momentum
The product of an objects mass and its velocity. p=mv
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Absolute zero
The temperature at which a system has minimum internal energy (-273 celsius)
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Internal energy
The sum of the random distribution of KE and Potential energy of atoms or molecules in a system
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Specific heat capacity
Energy required per unit mass of a substance to raise the temperature by 1K. Unit: JKg(^-1)K(^-1)
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Thermal equilibrium
A condition when 2 or more objects in contact have the same temperature so there is no net flow of energy between them
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Equation of state
This is the equation for an ideal gas. pV=nRT OR pV=NkT
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Impulse
The product of the force and time for which it acts. Impulse =F*Δt. Also is the area under a force-time graph
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Conservation of momentum
In a closedsystem when 2 bodies interact, the total momentum in any specified direction remains constant
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Velocity
Rate of change of displacement. V=Δdisplacement/Δtime. Unit: ms(^-1)
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Inelastic collision
KE is not conserved; some is tranferred to other forms. Momentum and total energy are always conserved
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Elastic collision
KE is conserved. Momentum and total energy are always conserved
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Other cards in this set
Card 2
Front
The net force acting upon an object is equal to its rate of change of momentum
Back
Newton's 2nd Law
Card 3
Front
When two bodies interact the forces they exert are equal and opposite
Back
Card 4
Front
Any two point masses attract each other with a force that is directly proportional to their masses, and inversely proportional to the sqr of their seperation
Back
Card 5
Front
The volume occupied by a gas at a constant pressure is directly proprtional to its thermodynamic (absolute) temperature
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