MCAT Physics Charts.docx

B Force Bernoulli’s Continuity Equation States that volume flow rate stay the same When volume is constant water velocity flow dec. Current The movement of positive charges Definition Is proportional to the liquid that is displaced by an object Weight of the fluid displaced Ex: Water is less dense t...

B Force Bernoulli’s Continuity Equation States that volume flow rate stay the same When volume is constant water velocity flow dec. Current The movement of positive charges Definition Is proportional to the liquid that is displaced by an object Weight of the fluid displaced Ex: Water is less dense than mercury thus more water must be displaced to achieve the same BF as mercury Archimedes Principle When the BF on a object is equal to the weight of the object it will float BF less than weight of the object it will sink Equation Fb= -pgV Submerged When nothing is submerged use weight Weight= mass * gravity Bernoulli’s Equation If velocity inc., the pressure must dec. P1 +1/2pv^2 + pgh Function For ideal fluids Fluid flow is laminar Fluid must remain the same volume regardless of the pressure No friction and no resistance Thermodynamics Sound Zeroth Law Explains that 2 system are also in thermal equ. With one another if they are each in thermal equ. With a 3rd system 1st Law Energy can not be created or destroyed in an isolated system Change in U= Q-W 2nd Law Total entropy of an isolated system can not be dec. over time 3rd Law As a system approaches absolute zero, its entropy will approach a constant Speed of sound in air 340m/s Depends on temp Physics Equation Capacitance Vectors vs Scalars Frequency & Wavelength Ohm’s Law V=IR Power P=mgh/t Height is in meters Work W=Fd (d always in meters) Work is done by= Positive work Work is done on= Negative work Ideal gas 22.4 L * mol -1 Heat Capacity C=mc = q/change T c= specific heat capacity mass is in grams Capacitors Equations C=C1 + C2….. In parallel 1/C= 1/C1 + 1/C2… In series C= Q/V Amount of charge stored per voltage C=kEA/d Single parallel plate capacitor Kinetic Energy KE=1/2mv^2 Mass is in kg Elastic poetical energy EPE= 1/2kx^2 Magnetic field strength Tesla (N*s)/(m*c) Frequency f=1/t t= period or time t is inversely proportional to freq Electric Field E=V-IR/L Definition Measure of capacitor ability to store charge Dielectric Addition of dielectric dec the effective electric field b/w the 2 plates It inc. Capacitance Capactior If it is charged then the battery is disconnected from the circuit, the voltage across the capacitor dec. Vectors The product of 2 vectors may be either a scalar or vector depending on the exact operation Cross product of 2 vectors yield another vector Examples Force Momentum Acceleration Scalars The product of 2 scalars will always be a scalar Dot product of 2 vectors will always be a scalar Examples Energy Frequency Sound waves dec. freq, move slower Radio waves inc. freq, velocity Freq inc.