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9181028
Physics (igcse cambridge) end of year exam
Description
everything for the end of year exam
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physics sciences
g9
Mind Map by
Julian Olsen
, updated more than 1 year ago
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Created by
Julian Olsen
almost 7 years ago
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Physics (igcse cambridge) end of year exam
Phsics formular
density= mass/volume
speed=distance/time
acceleration=change in velocity/time taken
Force=mass*acceleration
Equilibrium is force on a pived is he same on bove sides
Moment of a force = force*perpendicular distance from the pivot to force
pressure=force/area
F=Kx (Hooke´s law)
g.p.e.=mg*h (gravitational potentual energy)
k.e.=1/2mv² (kinetic energy)
workdone= energy transferred
workdone= force *distence moved
W=F*d=^E
power=workdone/time taken
P=W/t
power=energy transferred/time taken
P=^E/t
wave speed: speed=frequancey *wavelength
bronian motion
is smoke being hit bye are partials
Thermometer
two fixed points. mealting point (0°) and boiling point(100°)
waves
sound waves, speed is 330m/s (air). speed in solids is 1000 to 5000 m/s
Hz is frequany of the wave
more Hz higher pitch
the 20Hz to 20kHz we can hier
greater the amplitude, the louder the sound
sound can not travel through a vacum
waves transfer energy without transferring matter
light
the speed of light in a vacuum is 3 million m/s
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