Physics Equations

Question	Answer
Speed	S=D/T
Acceleration	Change in Velocity/Time
Weight	mg
Hooke's Law	F=kx
Force	mai
Momentum	mv
Impulse	mv-mu
Momentum Before	Momentum After
Work Done	Fd
Power	E/t
Kinetic Energy	1/2 mv2
Gravitational Potential Energy	mgh
Pressure	F/A
Pressure at a depth h under a liquid of density ρ	ρgh
ρv	constant (i.e. volume is inversely proportional to applied pressure)
Kelvin	Celsius + 273
Thermal Capacity	mc
Energy transferred	mc change in t
Wave Velocity	Frequency x Wavelength7y
Less Dense Medium to Denser Medium	Slows down and bends towards the normal
Denser Medium to Less Dense Medium	Speeds up and bends away from the normal
n(Calc)	speed of light in a vacuum/speed of light in medium
n (Relationship)	sini/sinr
Critical Angle	Occurs when the angle of reflection = 90
TIR	I= larger than c
n (Critical angle)	n=1/sinc
Dispersion Definition	The spreading out of light into the colours of the spectrum
Object Beyond 2F	Image is real, inverted and diminished. Used in a camera.
Object Between Centre of Lens and F	Image is virtual, magnified and upright. This is used in a magnifying glass.
Object Between 2F and F	Image is real, inverted and magnified. This is used in a projector.
Radio Wave Application	Communication
Microwave Application	Rapid Heating
Infrared Wave Application	Burglar Alarms
Visible Wave Application	Lighting
Ultra-Violet Wave Application	Sun Beds
X-Radiation Application	X-Rays
Gamma Wave Application	Medical diagnosis

Resource summary

	Created by Oliver Hall about 8 years ago