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41 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is amplitude |
Maximum dispacement of a wave |
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Doppler effect |
Change in frequency blah blah |
Change in.. |
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Interference |
Convergence of waves? |
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Center of gravity |
Point in which force line of action acts though regardless of bodys position in space |
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Upthrust equation |
Density×Vol×gravity |
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Centre of Mass |
Point on the body where a resultant force produces motion but no rotation |
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Law of flotation |
Floating body displaces fluid equall to its weight |
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What is elasticity |
Property of a material that allows it to return to its original shape after destorting forces have been removed |
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Hooke's Law |
F=ke |
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What is elastic region |
Elastic material can return to its original length in this region |
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What is the proportional limit |
Region in which Hooke's law is obeyed |
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Tensile strength/stress |
Force per unit area (stigma) |
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Tensile strain |
Extension/original length |
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Young Modulus is.. |
Ratio of tensile strength to tensile stress |
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Newtons 1st Law |
A body remains at rest or moves at constant velocity unless acted upon by an external force |
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Inertia |
Reluctance of a body to start moving or stop once In motion |
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Newtons 2nd Law |
Rate of change of momentum of a body is directly proportional to the force applied to it and momentum change takes place in the direction of the force F=ma |
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Newtons 3rd Law |
For every action there is an equall and opposite reaction |
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Conservation of momentum |
Momentum before collision equal to momentum after collision provide No external forces act on the system |
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Define Energy |
Ability to Do work |
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Define work |
Product of force and displacement in force direction |
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Principle of conservation of energy |
Energy can neither be created nor destroyed but converted from one form to another |
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Potential energy |
Energy stored in a body |
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Types of Potential energy |
Gravitational,elastic,electrical,chemical |
GEEC pronounced Geek |
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Gravitational potential |
Energy stored by a body because of it position in a gravitational field |
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Electrical potential |
Energy possessed by a body in a an electric field |
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Elastic potenitial |
Energy stored in a body as a molecular potential when the particles are displaced from equilibrium |
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Chemical potential |
Stored in a boy as a result of the arrangement of the molecules |
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Amplitude |
Max displacement of an oscillating particle from equilibrium position |
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Frequency |
Number of coompleted waves in a second |
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Period |
Time taken to complete one oscillation |
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Order of Electromagnetic spectrum. From smallest wavelenth |
Gamma rays, x-rays, ultraviolet, visible region,infra red, microwaves, radio&TV waves |
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Order of visible region |
VIBGYOR Violet, Indigo, Blue, Green, Yellow, Orange, Red |
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Progressive wave nature? |
Frequency is the same Amplitude is the same Phase of vibration is diff Energy is transfered |
F.A.P.E |
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Define Doppler Effect |
Apperent change in frequency of sound/light due to the movement of the sound/light source in relation to the observer |
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Superposition |
The resultant amplitude of two or more waves is the algebraic sum of their amplitudes |
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What is a stationary wave |
The resultant of superposition of two progressive waves with same amp and freq moving in opposites directions along the same medium. |
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Fringe separation equation |
Lamda=ax÷D |
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What is Diffraction |
The spreading of waves when they pass through a slit or round obstacles |
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What is emf in terms of energy |
The energy per coulomb supplied round a circuit connected to it |
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What is emf is terms of power |
It is the ratio of the power it delievers to the current it produces |
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