Physics
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- Created by: Madisonxo
- Created on: 02-05-17 20:54
Acceleration =?
Acceleration = change in velocity / time
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Weight = ?
Weight = mass x gravity
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Density =?
Density = mass / volume
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Force=?
Force = Mass x acceleration
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Hooke's law?
The extension of an elastic object is directly proportional to the force applied to it - only works if the elastic limit is not exceeded
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Law of moment? Law of equilibrium?
Total clockwise moment = total anticlockwise moment
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Work =?
Work = Force x distance
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KE?
KE= 1/2 mass x velocity^2
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Potential energy =?
Potential energy = mass x gravity x height
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Law of conservation?
The total energy of an isolated system remains constant (conserved). Energy can neither be created nor destroyed, it transforms from one form to another
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Power =?
Power = work done/time taken
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Pressure =?
Pressure = Force/Area
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Pressure due to liquid?
Pressure = density (kg/m^3) x gravity x height
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Boyle's law?
Boyle's law states that at constant temperature for a fixed mass, the absolute pressure and the volume of a gas are inversely proportional
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Wave speed =?
Wave speed = frequency x wavelength
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Frequency of wave=?
Frequency = 1/t
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What is a longitudinal wave?
A wave going back and forth in the direction of the wave
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What is a transverse wave?
A wave going perpendicular to the direction of the wave
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What is the law of reflection?
Angle of incidence = angle of reflection
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What happens when light goes from a lighter to denser medium?
Light bends towards the normal
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What happens when light goes from denser to lighter medium?
Light bends away from the normal
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Refractive index =?
Refractive index = sin i/sin r
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Unit of refractive index?
Refractive index doesn't have one
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Electromagnetic Spectrum order?
Gamma rays - X rays - UV - Visible light - Infra Red - Micro waves - Radio waves
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Colours of visible light spectrum?
VIBGYOR - Violet - Indigo - Blue - Green - Yellow - Orange - Red
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Is a sound wave longitudinal or transverse?
Longitudinal
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Pitch of a sound wave =?
Frequency
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Loudness of a sound wave =?
Amplitude
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What is a ferrous material?
Attracted by a magnet and can be magnetised.
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Example of a ferrous material?
Iron, steel, cobalt etc.
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What is a non-ferrous material?
Not attracted by magnet and cannot be magnetised.
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Examples of non-ferrous materials?
Copper, silver, aluminium, wood, glass etc.
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Current =?
Current (A) = Charge (C)/time
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What does current mean?
Rate of flow of charges in a conductor
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In circuits which path does a current choose?
The easiest one.
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What does directly proportional?
As one value increases, another increases at the same rate.
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Ohms law?
Voltage across the resistor is directly proportional to current
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Ohms law =?
Resistance (in ohms Ω) = voltage (v)/Current (a)
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Voltage =?
Voltage = Energy/Charge (C)
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In a series circuit what happens to the current and the voltage?
The current stays the same and the voltage divides.
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In a parallel circuit what happens to the current and the voltage?
The current divides and the voltage stays the same.
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Power =?
Power = Current (A)x Volts (V)
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Alpha particles
Helium nucleus, stopped by paper, highest ionisation potential
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Beta particles
Fast moving electrons, Stopped by aluminium, medium ionisation potential
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Gamma rays
Electromagnetic radiation, only stopped by a thick sheet of lead, least ionisation potential
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Half-life?
Time in which the activity becomes half
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Atomic symbol : X
A is the total no of protons and neutrons, Z is the total no of protons
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What is an isotope?
Same number of protons but different number of neutrons
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Other cards in this set
Card 2
Front
Weight = ?
Back
Weight = mass x gravity
Card 3
Front
Density =?
Back
Card 4
Front
Force=?
Back
Card 5
Front
Hooke's law?
Back
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