Term
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Definition
| The angle subtended at the center of a circle by an arc of length equal to the circle's radius |
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Term
| Specific Latent Heat of Vaporisation |
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Definition
| The quantity of energy per unit mass required to change a substance at constant temperature from a liquid into a vapor |
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Term
| Specific Latent Heat of Fusion |
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Definition
| The quantity of energy per unit mass required to change a substance at constant temperature from a solid into a liquid |
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Term
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Definition
| Acceleration is directly proportional to the displacement, and in the opposite direction to the displacement |
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Term
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Definition
| The build up of a large-amplitude oscillation when the frequencies of the vibrating objects match |
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Term
| Principle of Conservation of Momentum |
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Definition
| In any direction, in the absence of external forces, the total momentum of a system remains constant |
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Term
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Definition
| The quantity of thermal energy required to raise the temperature of a unit of mass of a substance by a unit temperature rise |
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Term
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Definition
| Defined as FΔt. It equals the change in momentum of a body- also equal to the area beneath a force/time graph |
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Term
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Definition
| The gas constant for a single molecule. k = 1.38 x 10²³ Jkˉ¹ |
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Term
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Definition
| The sum of the random distributions of kinetic and potential energies of all the molecules in the body |
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Term
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Definition
| A gas that has internal energy only in the form of random kinetic energy |
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Term
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Definition
| The volume of a fixed mass of gas is inversely proportional to the pressure exerted on it, provided the temperature is kept constant |
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Term
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Definition
| The period of a planet squared is directly proportional to the mean radius of it's orbit cubed. T²∝r³ |
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Term
| Gravitational Field Strength |
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Definition
| At any point it is the force acting per unit mass at that point |
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Term
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Definition
| For a fixed mass of an ideal gas at constant pressure, its volume (V) is proportional to the ideal gas temperature. V∝T |
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Term
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Definition
pV=nRT // pV=NkT
p=pressure; V=volume; n=no. of moles; R=gas constant; T=absolute temp |
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Term
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Definition
| A force is necessary to change the state of rest or uniform motion in a straight line of a body |
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Term
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Definition
| The rate of change of momentum of an object is directly proportional to the net force acting on it |
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Term
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Definition
| When body A exerts a force on body B, then body B exerts a force on body A that is equal, opposite in direction, and of the same type |
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Term
| Newton's Law of Gravitational Attraction |
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Definition
| The gravitational force of attraction between two bodies is directly proportional to the product of their masses, and inversely proportional to the square of the distance between them |
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Term
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Definition
| Defined as the mass of an object multiplied by its velocity. p=mv |
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Term
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Definition
| 1kWh is the energy used/provided by a 1kW device in 1 hour |
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Term
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Definition
| The product of 2π and the frequency, or 2π divided by the period |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Force acting towards the center of the circle, perpendicular to the velocity |
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Term
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Definition
| Deliberately reducing the amplitude of an oscillation |
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Term
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Definition
| The distance an object has moved from it's mean (equilibrium) position |
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Term
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Definition
| The net force is zero. i.e. weight = reaction force |
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Term
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Definition
| The number of oscillations per unit time at any point |
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Term
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Definition
| The region in which a force operates |
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Term
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Definition
| A collision in which momentum is conserved, but kinetic energy is not |
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Term
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Definition
| Contains 6.02 x 10²³ particles |
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Term
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Definition
| The force that gives a mass of 1kg an acceleration of one meter per second every second |
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Term
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Definition
| The time taken for the object to complete one revolution. It is related to the speed (v) and the radius (r) by: v =2πr/T |
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Term
| Perfectly Elastic Collision |
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Definition
| A collision in which no momentum or kinetic energy is lost |
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Term
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Definition
| The time it take to complete one orbit. For the Earth it is one year |
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Term
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Definition
| The time for one complete pattern of oscillation to take place at any point |
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Term
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Definition
| Whether the substance is a solid, liquid or gas |
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Term
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Definition
| Two objects at the same temperature |
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