Formula Flashcards
Beat Brandon
Formula modules / 5
Foundations of physics Forces and Motion Electrons, waves and photons Newtonian world and astrophysics Particles and medical physics
Vectors equations / 2
Fx = Fcos(theta)
Fy=Fsin(theta)
Modules in Forces and motion
Uniformly accelerated motion/suvats Force Turning effects Density Pressure Work, energy and power Springs and materials
Uniformly accelerated motion (force and motion)
v=u+at
s=1/2(u+v)t
s=ut+1/2at^2
v^2=u^2+2as
Force (force and motion)
F=(delta p)/(delta t) =I/t
p=mv
Turning effects (force and motion)
Moment = Fx Torque = Fd
Density (force and motion)
rho=m/v
Pressure (force and motion)
p=F/A
p=hrhog
Work energy and power (force and motion)
W=Fxcos(theta)
effeciency = (useful energy output)/(total energy output) *100%
P=W/t
P=Fv
Springs and materials (force and motion)
F=kx E=1/2Fx , E=1/2kx^2 sigma = F/A epsilon = x/L E=sigma/epsilon
Name topics in mod 4 electrons waves and photons
Charge Current Work done resisitance and resistors Power Internal resisitance Potential divider Waves Refraction Quantum physics
Charge (electrons waves and photons)
delta q = I * delta t
Current (electrons waves and photons)
I = Anev
Work done (electrons waves and photons)
W= Vq, W=epsilon Q , W=VIt
resitance and resistors (electrons waves and photons)
R=(rho * L)/A
R= R1 +R2 +…
1/R = 1/R1 +1/R2 +…
Power (electrons waves and photons)
P= VI, P=I^2V , P=V^2/R
Internal resitance (electrons waves and photons)
epsilon = I(R+r) , epsilon = V+ Ir
Potential divider (electrons waves and photons)
V out = R2/(R1+R2) *V in
V1/V2=R1/R2
Waves (electrons waves and photons)
v=f*lambda
f=1/T
I=P/A
Lambda = ax/D
Refraction (electrons waves and photons)
n=c/v
nsin(theta) = constant
sinC = 1/n
Quantum physics (electrons waves and photons)
E=hf, E=gc/lambda
Hf = phi + KEmax
lambda = h/p
Topics in mod 5 newtonian world and astrophysics
Thermal physics Ideal gases Circular motion oscillations gravitational field Astrophysics Cosmology
Thermal physics ( newtonian world and astrophysics)
E=mc*delta theta
E=mL
Ideal gases ( newtonian world and astrophysics)
pV=Nkt , pV=nRT
pV=1/3N*bar(c^2)
1/2mbar(c^2)=3/2kT
E=3/2kT
Circular motion ( newtonian world and astrophysics)
Omega = 2pi/T , omega = 2pif
v = omegar
a=v^2/r , a= (omega)^2r
F=mv^2/r , F=momega^2*r
Oscillations ( newtonian world and astrophysics)
Omega = 2pi/T , omega = 2pif
a= -(omega)^2x
x=Acos(omegat), x=Asin(omegat)
v= +-omega*root(A^2-x^2)
Gravitational field ( newtonian world and astrophysics)
g=F/m F=-GMm/r^2 g=-GM/r^2 T^2 = 4pi^2/GM * r^3 Vg = -GM/r energy = -GMm/r
Astrophysics ( newtonian world and astrophysics)
hf=delta E, hc/lambda = delta E
dsin(theta) =nlambda
lambda max is proportional to 1/T
L=4pir^2sigmaT^4
Cosmology ( newtonian world and astrophysics)
(delta lambda)/lambda ~(delta f)/f ~c/v
p=1/d
v=H0 *d
t=H0^-1
topics in particles and medical physics
Capacitance and capacitors electric field magnetic field electromagnetism radius of a nucleus radioactivity Einsteins mass-energy equations attenuation of X-rays ultrasound
Capacitance and capacitors (particles and medical physics)
C=Q/V C=(epsilon0*A)/d C=4*pi*epsilon0R C=C1 +C2 ... 1/C=1/C1+1/C2 ... W=1/2QV, W=1/2 Q^2/C , W= 1/2 V^2C tau = CR x = x0e^(-t/CR) x = x0(1-e^(-t/CR))
Electric field (particles and medical physics)
E=F/Q F=Qq/(4*pi*epsilon0*r^2) E=Q/(4*pi*epsilon0*r^2) E=V/d V=Q/(4*pi*epsilon0*r) Energy=Qq/(4*pi*epsilon0*r)
Magnetic field (particles and medical physics)
F=BILsin(theta)
F=BQv
Electromagnetism (particles and medical physics)
phi = BAcos(theta) epsilon = -(delta(Nphi)/delta t) ns/np = Vs/Vp = Ip/Is
radius of a nucleus (particles and medical physics)
R=r0A^1/3
Radioactivity (particles and medical physics)
A= -lambdaN, delta N/delta t = -lamdaN
lambdat1/2 = ln(2)
A=A0e^(-lamdat)
N=N0e^(-lamda*t)
Einsteins mass energy equation (particles and medical physics)
delta E = delta m *c^2
attentuation of x-rays (particles and medical physics)
I=I0e^(-mux)
Ultrasound (particles and medical physics)
Z= rho*c
Ir/I0 = (Z2-Z1)^2/(Z2+Z1)^2
(delta f)/f = 2vcos(theta)/c