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AP Physics B: Formulas

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. F(spring) = -kx
1/2QV=U
rho=m/v
Force of Spring
Period in General

2. Bernoulli's Equation [Conservation of energy]
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh
J=?vm=F?t
V=constant - Q=added - C=added

3. p = mv
Work
Pressure is constant ?P=0 w=-P?V
Momentum
T=2pvm/k

4. PV = nRT = NkT
J=?vm=F?t
Temperature is constant - ?U=0 - -Q=W
Ideal Gas Law
Kinematic with Velocity - Acceleration - and Displacement

5. Voltage-charges formula (2)
V=W/Q=KQ/r NO VECTORS
V=IR
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
F=ma

6. Force on a charged particle in a magnetic field
F=Bvsin?q
Spring Potential Energy
Thermal Conductivity
L=n/4? has to be odd numbers

7. PE of a spring
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
n1sin?1=n2sin?2
V=?f
PE=1/2kx²

8. Kinetic energy
?v=0 - w=0 area under the curve is zero
Average Molecular Kinetic Energy
KE=1/2mv²
E=-N Change in flux/?t=Blv (v=velocity of the wire)

9. r in torque
Fnet=Fb-Fg
Kinematic with Displacement - Velocity - Acceleration - and Time
Continuity
moment arm - perpendicular distance from the force to the axis of rotation

10. K = (3/2)kT
Kinetic Energy
Average Molecular Kinetic Energy
?v=0 - w=0 area under the curve is zero
I=?q/?t

11. heat flow through a window or door
V=Ed
n1sin?1=n2sin90
q=K?AT/L
Kinematic with Velocity - Acceleration - and Displacement

12. Voltage-parallel plates
Fb=mf g= rhof Vf g
Archimedes Principle/Bouyancy
Kinematic with Velocity - Acceleration - and Displacement
V=Ed

13. Hookes law
Kinematic with Displacement - Velocity - Acceleration - and Time
V=added - I=constant - R= added
F=kx
Vab=Rated voltage-IR (r=internal resistance)

14. Isobaric process
Pressure is constant ?P=0 w=-P?V
SG=rho object/10³
Force of Spring
T=2pr/v

15. F-F or NF-NF
clockwise
Pressure from Depth
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Vab=Rated voltage-IR (r=internal resistance)

16. Capacitors in series
W=KEf-KEi
V=(331 +.6T) T=temp in Celsius
V=added - Q=constant - C= 1/C
V=IR

17. Engines (2 equations)
QH=QL +W and e=W/QH
Average Speed of each Molecule
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
1/2QV=U

18. Work - simple formula
?P=rho(g)?h
W=Fd=mad - direction of force must be same as direction of distance
V=IR
Q=CV

19. F(gravity) = -(Gm1m2/r²)
Force of Gravity
Fgy=FgSin?
n1sin?1=n2sin?2
Q=CV

20. Pascals principle
Average Speed of each Molecule
Pin=Pout=Fin/Ain=Fout/Aout
moment arm - perpendicular distance from the force to the axis of rotation
counterclockwise

21. Period for a spring in simple harmonic motion
Fgy=FgSin?
1ev=1.6E-19J
T=2pvm/k
Efficiency of a Heat Engine

22. Period for circular motion
V=(331 +.6T) T=temp in Celsius
T=2pvl/g
T=2pr/v
V=IR

23. snells law
L=n/2?
n1sin?1=n2sin?2
V=IR
P=mv (Kg m/s) or (N s)

24. Couloms law (force between two charged objects)
V=added - I=constant - R= added
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
F=kQ1Q2/r² BREAK INTO VECTORS
f=mv²/r

25. Average kinetic energy
Force of Friction
f=mv²/r
Kinematic with Velocity - Acceleration - and Time
Kavg=(3/2)kbT

26. Impulse
J=?vm=F?t
P=mv (Kg m/s) or (N s)
PE=mgh
Ug= Gm1m2/r

27. Period for a pendulum in simple harmonic motion
PE=1/2kx²
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Period in General
T=2pvl/g

28. P = Fvcos?
W=KEf-KEi
Average Molecular Kinetic Energy
Power from Force
Fy=FnCos?-Fg

29. Continuity equation [Conservation of mass]
V=?f
P=IV
Kinematic with Velocity - Acceleration - and Time
A1V1=A2V2

30. Thermal expansion
Work
Fx=mv²/r=FnSin?
?L=(coefficient of linear expansion)aLinitial?T
billiard balls - no sticking total energy is conserved

31. Energy in a capacitor
PE=mgh
Pressure from Depth
1/2QV=U
Thermal Conductivity

32. Flux
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
Flux (in webers)=Bcos?A
Centripetal Acceleration
Fny=FnCos?

33. Dialectrics insulating sheet between plates
C=KepA/d
1/2QV=U
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
W=Fd=mad - direction of force must be same as direction of distance

34. Magnitude of gravitational forces between objects
Ft=0
1ev=1.6E-19J
F=Gm1m2/r²
Power from Force

35. F(buoy) = pVg
Power from Force
Force of Gravity
Archimedes Principle/Bouyancy
V=added - I=constant - R= added

36. EMF (two formulas)
E=-N Change in flux/?t=Blv (v=velocity of the wire)
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
Force of Gravity
?P=rho(g)?h

37. Vectors in momentum
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
px and py are conserved
Continuity
V=(331 +.6T) T=temp in Celsius

38. v = v0 + at
V=added - I=constant - R= added
Kinematic with Velocity - Acceleration - and Time
V=constant - I=added - R=1/r added
Fx=mv²/r=FnSin?

39. Ideal gas laws
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
moment arm - perpendicular distance from the force to the axis of rotation
V=IR
a=v²/r

40. Isovolumetric/isochoric
?v=0 - w=0 area under the curve is zero
P=F/A=rho(g)h
Fx=mv²/r=FnSin?
P=IV

41. Isothermal process
F=kx
?L=(coefficient of linear expansion)aLinitial?T
Temperature is constant - ?U=0 - -Q=W
Pressure from Depth

42. e = (T(hot) - T(cold))/T(hot)
Force of Spring
Efficiency of an Ideal Engine
Kavg=(3/2)kbT
Kinematic with Velocity - Acceleration - and Displacement

43. Electric field intensity
J=?vm=F?t
Kinematic with Velocity - Acceleration - and Time
1/2QV=U
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS

44. P = F/A
General Pressure
Efficiency of a Heat Engine
v3kT/m [mass per molecule] - v3RT/M [molar mass]
T=2pvl/g

45. Force buoyancy (2 formulas)
Gravitational Potential Energy Anywhere
Force of Spring
Fb=mf g= rhof Vf g
moment arm - perpendicular distance from the force to the axis of rotation

46. Total internal reflection
Efficiency of a Heat Engine
Bernoulli Principal
sum of voltages must be zero
n1sin?1=n2sin90

47. x = x0 + v0t + ½at²
Pressure is constant ?P=0 w=-P?V
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
Kinematic with Displacement - Velocity - Acceleration - and Time
P=W/T=FD/T=FV

48. Velocity of sound in a strong
W=Fd=mad - direction of force must be same as direction of distance
V=vFt/(m/l)
Flux (in webers)=Bcos?A
v3kT/m [mass per molecule] - v3RT/M [molar mass]

49. U(spring) = ½kx²
Gravitational Potential Energy Anywhere
Spring Potential Energy
Adiabatic and isothermal processes ec= TH-TL/
Constructive: 2t=m? - Destructive: 2t=m?+1/2?

50. Capacitance
f=mv²/r
R=rho L/A A=cross sectional area
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
Q=CV