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Physics Formulas, Physics Formulas Flashcards

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10515690642TorqueForce applied x lever arm length0
10515690643Local gravitational potential energyPE= mgh1
10515690644General gravitational potential energyPE= -GMm/r2
105156906453 types of conservative forcesFg, Felastic, Felectric3
105156906464 types of nonconservative forcesFf, Air, Fn, Ft4
10515690647What makes a force conservative?2 ways: 1. If the work done by the force on an object moving from one point to another depends only on the initial and final positions and is INDEPENDENT of the particular path 2. Net work done by the force on an object moving around a closed path is zero5
10515690648Work-energy theoremWork due to non-conservative force= change in kinetic + change in potential + any change in internal energy6
10515690649Conservation of mechanical energyTotal mechanical energy of a system remains constant as the object moves, provided that the net work done by non-conservative forces is zero7
10515690650Angular displacementarc length/radius8
10515690651Moment of inertiaTorque= moment of inertia x angular acceleration9
10515690652Energy used in rotating something1/2 I(inertia)w^210
10515690653Buoyant forceFb= density x volume displaced x g11
10515690654Doppler effectThe apparent frequency of the source is increased as the source approaches the observer, and is decreased at it leaves12
10515690655Elastic vs Inelastic collisions (in regards to KE and momentum)Elastic: KE and momentum are conserved Inelastic: KE is NOT conserved, momentum is13
10515690656Angular momentumL= moment of inertia x angular velocity14
10515690657Electric field due to a point chargeE=kQ/r^215
10515690658Electric potential energykQ1Q2/r16
10515690659Electric potentialV=kQ/r17
10515690660Force in a constant electric fieldF= qE18
10515690661Electric potential in a constant electric fieldV=Ed19
10515690662Electric potential energy in a constant electric fieldU= qEd=Vq20
10515690663Force on a charge moving in a magnetic fieldF=qvBsin(theta)21
10515690664Electric powerP=IV=I^2R= V^2/R22
10515690665Electric potential energy stored by a capacitorU= 1/2 CV^2 = 1/2QV= 1/2Q^2/C23
10515690666Total internal reflectioncritical angle= n2/n124
10515690667Index of refractionn=c/v, v2/v1=n1/n225
10515690668The lens equation1/object distance + 1/image distance= 1/focal length26
10515690669When is the focal length of the lens positive/negativepositive= converging negative= divergine27
10515690670When is object distance positive/negativepositive= on the side where light is coming from negative= on the opposite side28
10515690671When is image distance positive/negativePositive= opposite side of the lens from light Negative= same side29
10515690672Lateral magnificationm=hi/ho= -di/do30
10515690673Power of a lenseP=1/focal length31
10515690674Focal length of a spherical mirrorf=1/2 of the radius of curvature32
10515690675Power (kinematics)Power=work/time=Force x velocity33
10515690676centripetal accelerationacceleration= velocity^2/r34
10515690677Work (rotation)Work= torque x change in angular displacement35
10515690698Conservation of angular momentum36
10515690699Speed of a wave on a stretched string37
10515690700Speed of sound38
10515690701Frequency and period39
10515690702Frequency and angular velocity of a mass spring40
10515690703Frequency and angular velocity of a pendulum41
10515690704Four expressions for the density of water42
10515690705SI unit for pressure43
10515690706Relationship between pressure and depth44
10515690707Archimedes principle45
10515690678Displacement as a function of timex= vot + xo + 1/2at^246
10515690679Velocity of a ball you dropped from a buildingv= square root(2gh)47
10515690680Velocity in the x or y directionVx= vcos(theta) Vy=vsin(theta)48
10515690681Force of static frictionForce is less than or equal to the coefficient of static friction times the normal force49
10515690682Force on an inclined planeF=mgsin(theta)50
10515690683ImpulseI=force x change in time= mv51
10515690684Work done by constant forceW=fdcos(theta)52
10515690685Sound decibelsB=10log(Io/I)53
10515690686Beat frequencyFb= f2-f154
10515690687Electric forceKq1q2/r^255
10515690688Speed of lightc=E/B56
10515690689Energy of a photonE=hv/wavelength57
10515690690Resistance of a wiredensity(L/A)58
10515690691sin(30).559
10515690692cos(30).88660
10515690693sin(60).88661
10515690694cos(60).562
10515690695tan(30).57763
10515690696tan(45)164
10515690697tan(60)1.7 (square root of 3 over 1)65
10515690709Wave Speedv = F * Lambda(wavelength)66
10515690710Average speedtotal distance / time67
10515690711MOTION formula 1 without adisplacement = 1/2(Vo + V)t68
10515690712MOTION formula 2 without vdisplacement = Vot + 1/2at^269
10515690713MOTION formula 3 without Vodisplacement = vt - 1/2at^270
10515690714MOTION formula 4 without displacementV = Vo + at71
10515690715MOTION formula 5 withoutV^2 = Vo^2 +2a(displacement)72
10515690716Newtons second lawF = ma73
10515690717strength of Gravitational ForceF = G * (M1*M2/r^2)74
10515690718WeightFg = g * m75
10515690719PEmgh76
10515690720KE1/2 mv77
10515690721PowerWork/Time78
10515690722Conversion of Mechanical EnergyK1 + U1 = Kf + Uf79
10515690723ImpulseAverage Force * time80

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