Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Physics

### MCAT Study Cards

Term | Definition |
---|---|

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