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Physics

MCAT Study Cards

TermDefinition
translational motion displacement x0 + v0t + 1/2at^2
translational motion velocity (w/0 time) (v0)^2 +2ax
translational motion velocity (w/o displacement) v0 +at
max frictional force uN where N is the normal force
force of uniform circular motion ma = mv^2 /r
acceleration of uniform circular motion v^2 /r
Kinematics, work Fdcos(theta)
Kinematics, power (Wf - Wi)/ (tf - ti)
Mechanical Energy KE + PE
weight mg
force of gravity and inclined plane mgsin(theta)
momentum p = mv
Potential Energy -W = mgh
Which is greater: static or kinetic friction? static friction is always greater
is gravity a conservative force? yes
is friction a conservative force? no
Spring, force -kx
Spring, work kx^2 /2
Newton units kgm/s^2
Joules units kgm^2 /s^2
Hertz units s^-1
Ohm units W/A^2
Watt units J/s
Volt units W/A
Resistors in series R1 + R2 + ....
Resistors in parallel R1*R2*..../R1 + R2 + ....
Torque rFsin(theta) = rmgsin(theta)
Current, I Q/t
Continuity of fluids A1*v1 = A2 * v2
Thermodynamics, heat mc(Tf - Ti)
Snell's Law n1*sin(theta1) = n2*sin(theta2)
Index of refraction c/speed of light in medium
What is the angle of incidence equivalent to? angle of reflection
Voltage = IR, remember V, I, R triangle
Pressure Force/Area
Force of buoyancy Vpg = mg, where p is density
Speed sqrt(2gh)
Optics, Power 1/i + 1/o = 1/f
Optics, o object distance from mirror
Optics, i image distance from mirror
Optics, f focal length mirror
focal length positive when? converging lens or concave mirror
focal length negative when? diverging lens or convex mirror
Gibbs free energy biochemistry change H - T(change in S)
Gibbs free energy general chemistry -RTln(Keq)
Capacitors in series 1/C1 + 1/C2 +....
Capacitors in parallel C1 + C2 + ....
Bernoulli's equation fluids P + rho(gh) + 1/2(rho)v^2
pendulum, frequency 1/2pi *sqrt(g/L) or ~sqrt(k/m)
pendulum, period 2pi * sqrt(L/g)
Doppler Effect f' = fs(v +/- vo)/(v +/- vs) where vs is the velocity of source vo is velocity of the observer fs is real frequency f' apparent frequency
Positive charges move to regions of? lower potential
Negative charges move to regions of? higher potential
Energy of photon emitted or absorbed abs(13.6eV*[(1/nf^2) - (1/ni^2)] = hf
Heisenberg Uncertainty principle deltax*deltap > h/2pi
Kirchoff's Law for Current (I) Sum of I = 0 at a junction
Kirchoff's Law for Voltage Sum of V = 0 at a loop
Energy btwn two parallel plates V/d
Force of an electrostatics F=kq1*q2/r^2
Force of a magnetic field abs(q)vBsin(theta)
First Law of Thermodynamics Uf-Ui = Q-W
adiabatic process Q=0, no heat exchanged, E=-W
isochoric process W=0, no volume exchanged
isothermal process Q=W
Capacitance epsilon(A/d) where epsilon = 1.0x10^-12
Energy stored by capacitor 1/2(CV)^2
total momentum p1 + p2 + ... = pf
Work Fdcos(theta)
Hydrostatic pressure P = density(gravity)(height)
Boltzmann's constant Energy of an individual particle level with temperature. k=R/Na where R is the ideal gas constant, and N is avogadro's constant
sin(0) 0
sin(30) 1/2
sin(45) 1/sqrt(2) or .70
sin(60) sqrt(3)/2 or .85
sin(90) 1
cos(0) 1
cos(30) sqrt(3)/2 or .85
cos(45) 1/sqrt(2) or .70
cos(60) 1/2
cos(90) 0
ideal gas law assumption namely, that gas molecules have negligible volume and that intermolecular interactions are negligible
real gases differ from ideal gases at high pressure and low temperature
resistivity p=RA/l R is the total resistance A is the cross sectional area l is the length of the material
metallic conduction involves the flow of electrons, decreases with increases in temperature, there is no transfer of matter
electrolytic conduction involves the flow of ions, involves a chemical reaction, increases with increasing temperature, there is a transfer of matter
Snell's Law n1 sin θ1 = n2 sin θ2
Dielectrics nonconducting material placed between two capacitors. ALWAYS increases capacitance. C=kC, where k>1
Diffraction dsinθ = mλ
Resistivity proportionality Amplitude^2 Temperature directly proportional
Archimedes principle of density Wair/(Wair-Wwater)
Electric field lines proceed from positive to negative regions
Real images always inverted
Virtual images always upright
Poiseuille Flow Resistance to Flow R=8nL/(p*r^4)
Poiseuille Flow Volume Flow rate pi*(change P)(r^4)/8nL
Boyle's Law PV= constant
Charles' Law V/T = constant
Avogadro's Law V/n = constant
Power W/t
Pascal's Law F/A = constant
surface tension due to attraction of molecules in the solvent
Electric field lines out of positive charges, into negative charges
Created by: missmartian