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Leaving Cert Physics Equations
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Gravity
Terms in this set (50)
v = u + at
velocity
ma
Force
Fd
Torque
mv
Momentum (p)
½mv²
Kinetic Energy
mgh
Potential Energy
Fs
Work
W/t
Power
kx
Force of Spring
1/f
Period (f=frequency)
Gmm/r²
Force of gravity between two masses
E/q
Force on charge by electric field
F/q
Electric field
W/Q
Potential difference
Q/V
Capacitance (C)
RA/l
Resistivity
IR
Potential Difference (V)
IV
Power (terms of voltage)
I²R
Power (terms of resistance)
R tot=R₁+R₂+R₃....
Total Resistance (Series)
(1/R₁)+(1/R₂)+(1/R₃)+...=(1/Rtotal)
Total Resistance in Parallel
Bev
Force of B field on charged particle
BI L
Force of B field on wire
BA
Magnetic Flux
þgh
Pressure in a liquid
F/A
Pressure
hf
energy (wave)
hf-work function
Kinetic Energy
v/λ
Wavelength
mc²
Energy ( with ref to c)
fλ
velocity of a wave
sin i /sin r
index of refraction (n)
1/n
sin of critical angle C
(1/u)+(1/v)=1/f
Mirors and lenses
s = ut + ½at²
distance in terms of u, t and a
v² = u² + 2as
velocity in terms of u, s and a
m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂
Conservation of momentum
s/r
Angle in radians θ
θ/t
Angular Velocity
v = rω
Relationship between linear velocity and angular velocity
rω² = v²/r
Centripetal acceleration
mrω² = (mv²)/r
Centripetal force
mg
Weight
Gm₁m₂/d²
Newton's law of gravitation
GM/R²
g in terms of M and R
4π²R³ / GM
T²
m/V
Density
pV=constant
Boyle's law
Fs
Moment
Fd
Couple
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