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Foundations of Physics
Descripción
AS level (Foundations) Physics Mapa Mental sobre Foundations of Physics, creado por Charlie Turner el 23/11/2016.
Sin etiquetas
physics
science
a level
as level
foundation
foundations
si units
units
base
quantities
base quantities
physics
foundations
as level
Mapa Mental por
Charlie Turner
, actualizado hace más de 1 año
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Creado por
Charlie Turner
hace alrededor de 8 años
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Resumen del Recurso
Foundations of Physics
International System of Units (SI)
Developed so that scientists all around the world could work with one system of measurements
Base Quantities
One of the 7 fundamental physical quantities that can be used to describe all other quantities
Mass
Length
Time
Current
Amount of Substance
Temperature
Luminosity
Base Units
The units of base quantities
Kilogram (kg)
Nota:
Mass
Metres (m)
Nota:
Length
Seconds (s)
Nota:
Time
Amperes (A)
Nota:
Current
Mole (mol)
Nota:
Amount of substance
Kelvin (K)
Nota:
Temperature
Candela (cd)
Nota:
Luminosity
Derived Quantity
A quantity derived from a combination of base quantities
Force
Pressure
Charge
Power
Voltage
Energy
Frequency
Others (see note)
Nota:
Area Volume Density Velocity Acceleration Work
Derived Unit
Units of derived quantities
Newton (N)
Nota:
Force Can be written as kgms^-2
Pascal (Pa)
Nota:
Pressure Can be written as m^-1kgs^-2
Coulomb (C)
Nota:
Charge Can be written as sA
Watts (W)
Nota:
Power Can be written as m^2kgs^-3
Volts (V)
Nota:
Volts Can be written as m^2kgs^-3A^-1
Joules (J)
Nota:
Energy Can be written as kgm^2s^-2
Hertz (Hz)
Nota:
Frequency Can be written as s^-1
Others (see note)
Nota:
m^2 (Area) m^3 (Volume) kgm^-3 (Density) ms^-1 (Velocity) kgms^'1 (Momentum) ms^-2 (Acceleration) kgm^2s^-2 (Work)
Prefixes
Smaller
Pico
x10^-12
Nano
x10^-9
Micro
x10^-6
Milli
x10^-3
Centi
x10^-2
Deci
x10^-1
Bigger
Mega
x10^6
Kilo
x10^3
Giga
x10^9
Tera
x10^12
Uncertainty
Percentage uncertainty = (absolute uncertainty / average measurement) x 100
If you are multiplying or dividing quantities, the total percentage uncertainty is the sum of each percentage uncertainty
Percentage Difference
((accepted value - measured value) / accepted value) x 100
Graphs
Straight line graphs
y = mx + c
m (gradient) = change in y / change in x
c is the y intercept when x=0
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