AP Physics B Formulas Flashcards
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| 377213981 | The three kinematics equations | Vf=Vi+ at Vf²=Vi² +2ad d=1/2 a t² +vit | |
| 377213982 | Simple force equation | F=ma | |
| 377213983 | On an inclined plane, gravity in the x | Fgx=FgCosθ | |
| 377213984 | On an inclined plane, gravity in the y | Fgy=FgSinθ | |
| 377213985 | Period for circular motion | T=2πr/v | |
| 377213986 | Centripetal acceleration | a=v²/r | |
| 377213987 | Centripetal force | f=mv²/r | |
| 377213988 | Critical speed is | Ft=0 | |
| 377213989 | On a banked curve in circular motion, Fn in the x is | Fnx=FnSinθ | |
| 377213990 | On a banked curve in circular motion, Fn in the y is | Fny=FnCosθ | |
| 377213991 | Banked curve, sum of the forces in the x | Fx=mv²/r=FnSinθ | |
| 377213992 | Banked curve, sum of the forces in the y | Fy=FnCosθ-Fg | |
| 377213993 | Magnitude of gravitational forces between objects | F=Gm1m2/r² | |
| 377213994 | Work, simple formula | W=Fd=mad, direction of force must be same as direction of distance | |
| 377213995 | Kinetic energy | KE=1/2mv² | |
| 377213996 | Potential energy | PE=mgh | |
| 377213997 | Net work | W=KEf-KEi | |
| 377213998 | Power, simple formula (mechanics) | P=W/T=FD/T=FV | |
| 377213999 | hookes law | F=kx | |
| 377214000 | PE of a spring | PE=1/2kx² | |
| 377214001 | Momentum | P=mv (Kg m/s) or (N s) | |
| 377214002 | Impulse | J=∆vm=F∆t | |
| 377214003 | Elastic collision | billiard balls, no sticking total energy is conserved | |
| 377214004 | Vectors in momentum | px and py are conserved | |
| 377214005 | torque | t=Fr, force must be perpendicular to the moment arm and the axis of rotation | |
| 377214006 | r in torque | moment arm, perpendicular distance from the force to the axis of rotation | |
| 377214007 | Positive torque | counterclockwise | |
| 377214008 | negative torque | clockwise | |
| 377214009 | Period for a spring in simple harmonic motion | T=2π√m/k | |
| 377214010 | Period for a pendulum in simple harmonic motion | T=2π√l/g | |
| 377214011 | Energy of gravitational attraction | Ug= Gm1m2/r | |
| 377214012 | simple density formula | rho=m/v | |
| 377214013 | specific gravity | SG=rho object/10³ | |
| 377214014 | Pressure (2 formulas) | P=F/A=rho(g)h | |
| 377214015 | Change in pressure | ∆P=rho(g)∆h | |
| 377214016 | Force buoyancy (2 formulas) | Fb=mf g= rhof Vf g | |
| 377214017 | Net force/apparent weight in forces | Fnet=Fb-Fg | |
| 377214018 | Net force/apparent weight broken done | Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal | |
| 377214019 | Pascals principle | Pin=Pout=Fin/Ain=Fout/Aout | |
| 377214020 | Absolute pressure | P=Patm + rho g h | |
| 377214021 | Continuity equation [Conservation of mass] | A1V1=A2V2 | |
| 377214022 | Bernoulli's Equation [Conservation of energy] | P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh | |
| 377214023 | Thermal expansion | ∆L=(coefficient of linear expansion)αLinitial∆T | |
| 377214024 | ideal gas laws (2) | PV=nRT PV=N (# of molecules)kb (bozons constant)T | |
| 377214025 | standard pressure and temperature and pressure | 273K and 1.013E5 pa | |
| 377214026 | Average kinetic energy | Kavg=(3/2)kbT | |
| 377214027 | vrms (2 equations) | √3kT/m [mass per molecule] √3RT/M [molar mass] | |
| 377214028 | Basic thermo equation | ∆U=Q + W heat added= heat + work | |
| 377214029 | W | W is positive when work is done on the system, compression W is negative when work is done by the system, expansion | |
| 377214030 | Isothermal process | Temperature is constant ∆U=0 -Q=W | |
| 377214031 | Adiabatic process | ∆U=W no heat added system (Q=0) | |
| 377214032 | isobaric process | Pressure is constant ∆P=0 w=-P∆V | |
| 377214033 | isovolumetric/isochoric | ∆v=0 w=0 area under the curve is zero | |
| 377262615 | Engines (2 equations) | QH=QL +W and e=W/QH | |
| 377262616 | Carnot engine | Adiabatic and isothermal processes ec= TH-TL/ | |
| 377262617 | Couloms law (force between two charged objects) | F=kQ1Q2/r² BREAK INTO VECTORS | |
| 377262618 | Electric field intensity | E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS | |
| 377262619 | Voltage-charges formula (2) | V=W/Q=KQ/r NO VECTORS | |
| 377262620 | Voltage-parallel plates | V=Ed | |
| 377262621 | electron volts | 1ev=1.6E-19J | |
| 377262622 | Capacitance | Q=CV | |
| 377262623 | dialectrics insulating sheet between plates | C=KepA/d | |
| 377262624 | Energy in a capacitor | 1/2QV=U | |
| 377308419 | 1st right hand rule | shows magnetic field created by a current. Thumb in direction of the current, fingers show direction of field | |
| 377308421 | 2nd right hand rule | on a solenoid wrap finger around direction of current, thumb will point in north pole direction | |
| 377308423 | force on a current carrying wire in a magnetic field | F=BIL | |
| 377308424 | 3rd right hand rule | thumb in direction of proton, fingers in direction of magnetic field and palm will show you force | |
| 377308426 | force on a charged particle in a magnetic field | F=Bvsinθq | |
| 377308428 | Flux | Flux (in webers)=BcosθA | |
| 377308430 | EMF (two formulas) | E=-N Change in flux/∆t=Blv (v=velocity of the wire) | |
| 377308432 | Current | I=∆q/∆t | |
| 377308434 | Voltage (circuts) | V=IR | |
| 377308436 | Power (circuts) | P=IV | |
| 377337858 | Resistivity in a wire | R=rho L/A A=cross sectional area | |
| 377337859 | Series Circuits | V=added I=constant R= added | |
| 377337860 | Parallel Circuits | V=constant I=added R=1/r added | |
| 377337861 | Kirchhoffs Junction rule | Sum of all currents (I) entering=sum of all currents (I) leaving | |
| 377337862 | Kirchhoffs loop rule [conservation of energy] | sum of voltages must be zero | |
| 377337863 | Voltage across a battery terminal | Vab=Rated voltage-IR (r=internal resistance) | |
| 377337864 | Capacitors in parallel | V=constant Q=added C=added | |
| 377337865 | Capacitors in series | V=added Q=constant C= 1/C | |
| 377337866 | Ammeter | in series, measures current, low resistance | |
| 377337867 | voltmeter | added in parallel, measures volts, high resistance | |
| 377337868 | Simple harmonic motion, pendulum | T=2π√l/g | |
| 377337869 | Simple harmonic motion, spring | T=2π√m/k | |
| 377337870 | Velocity of a wave | V=λf | |
| 377337871 | Velocity of sound in a strong | V=√Ft/(m/l) | |
| 377337872 | Vsound | V=(331 +.6T) T=temp in Celsius | |
| 377337873 | Natural frequency open tube/not in a tub | L=n/2λ | |
| 377337874 | natural frequencies in a closed tube | L=n/4λ has to be odd numbers | |
| 381022497 | snells law | n1sinθ1=n2sinθ2 | |
| 381022498 | Total internal reflection | n1sinθ1=n2sin90 | |
| 381022499 | F-F or NF-NF | Constructive: 2t=mλ Destructive: 2t=mλ+1/2λ | |
| 381022500 | F-NF or vice versa | Constructive: 2t=mλ+1/2λ Destructive: 2t=mλ | |
| 381022501 | heat flow through a window or door | q=K∆AT/L |