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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. U(gravitational) = -(Gm1m2/r)
Gravitational Potential Energy Anywhere
Kinematic with Velocity - Acceleration - and Time
F=BIL
Archimedes Principle/Bouyancy

2. v = v(3RT)/M = v(3KT)/µ
counterclockwise
KE=1/2mv²
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
Average Speed of each Molecule

3. Hookes law
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
?L=(coefficient of linear expansion)aLinitial?T
?U=Q + W - heat added= heat + work
F=kx

4. Voltage across a battery terminal
Vab=Rated voltage-IR (r=internal resistance)
Q=CV
Force of Gravity
W=KEf-KEi

5. W
Force of Friction
PE=1/2kx²
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
P=Patm + rho g h

6. Electric field intensity
Spring Potential Energy
Gravitational Potential Energy Anywhere
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
P=F/A=rho(g)h

7. Natural frequency open tube/not in a tub
V=constant - I=added - R=1/r added
L=n/2?
V=vFt/(m/l)
v3kT/m [mass per molecule] - v3RT/M [molar mass]

8. PV = nRT = NkT
Kinematic with Velocity - Acceleration - and Time
Ideal Gas Law
V=(331 +.6T) T=temp in Celsius
V=?f

9. Net force/apparent weight in forces
Fnet=Fb-Fg
W=KEf-KEi
Kinematic with Velocity - Acceleration - and Time
?L=(coefficient of linear expansion)aLinitial?T

10. Velocity of a wave
V=added - I=constant - R= added
V=constant - I=added - R=1/r added
A1V1=A2V2
V=?f

11. v² = v0² + 2a(x-x0)
L=n/4? has to be odd numbers
F=Bvsin?q
Continuity
Kinematic with Velocity - Acceleration - and Displacement

12. 2nd right hand rule
Gravitational Potential Energy Anywhere
V=Ed
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
QH=QL +W and e=W/QH

13. F(friction) = µN
Spring Potential Energy
Fnet=Fb-Fg
Temperature is constant - ?U=0 - -Q=W
Force of Friction

14. Capacitance
sum of voltages must be zero
Q=CV
n1sin?1=n2sin?2
?U=Q + W - heat added= heat + work

15. x = x0 + v0t + ½at²
Kinematic with Displacement - Velocity - Acceleration - and Time
n1sin?1=n2sin?2
Pin=Pout=Fin/Ain=Fout/Aout
Ideal Gas Law

16. Isobaric process
V=?f
Kinematic with Velocity - Acceleration - and Displacement
Pressure is constant ?P=0 w=-P?V
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion

17. vrms (2 equations)
F=BIL
Continuity
v3kT/m [mass per molecule] - v3RT/M [molar mass]
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh

18. F(buoy) = pVg
Archimedes Principle/Bouyancy
Efficiency of an Ideal Engine
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Efficiency of a Heat Engine

19. Isovolumetric/isochoric
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
Bernoulli Principal
?v=0 - w=0 area under the curve is zero

20. Voltage-parallel plates
J=?vm=F?t
F=ma
?P=rho(g)?h
V=Ed

21. Velocity of sound in a strong
Kinetic Energy
Power from Energy
V=vFt/(m/l)
L=n/2?

22. Potential energy
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
A1V1=A2V2
PE=mgh
T=2pvm/k

23. Centripetal force
?U=Q + W - heat added= heat + work
f=mv²/r
C=KepA/d
Bernoulli Principal

24. 1st right hand rule
Gravitational Potential Energy Anywhere
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
PE=1/2kx²
T=2pvm/k

25. W = F?rcos?
V=constant - Q=added - C=added
Fgx=FgCos?
Work
Fgy=FgSin?

26. Pascals principle
I=?q/?t
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
Pin=Pout=Fin/Ain=Fout/Aout
Kinematic with Velocity - Acceleration - and Displacement

27. On an inclined plane - gravity in the x
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
Fgx=FgCos?
Kinematic with Velocity - Acceleration - and Time
F=Bvsin?q

28. EMF (two formulas)
F=ma
E=-N Change in flux/?t=Blv (v=velocity of the wire)
J=?vm=F?t
Force of Friction

29. Energy in a capacitor
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
1/2QV=U
1ev=1.6E-19J

30. Ammeter
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
in series - measures current - low resistance
Spring Potential Energy
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion

31. Vectors in momentum
P=mv (Kg m/s) or (N s)
Pressure from Depth
moment arm - perpendicular distance from the force to the axis of rotation
px and py are conserved

32. Power - simple formula (mechanics)
I=?q/?t
Gravitational Potential Energy Anywhere
Kinematic with Velocity - Acceleration - and Displacement
P=W/T=FD/T=FV

33. Force buoyancy (2 formulas)
Fb=mf g= rhof Vf g
Spring Potential Energy
Ft=0
P=IV

34. heat flow through a window or door
?L=(coefficient of linear expansion)aLinitial?T
q=K?AT/L
T=2pvl/g
T=2pr/v

35. Simple harmonic motion - pendulum
V=constant - Q=added - C=added
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
T=2pvl/g

36. Impulse
Fnx=FnSin?
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
J=?vm=F?t
KE=1/2mv²

37. Dialectrics insulating sheet between plates
Fny=FnCos?
Pin=Pout=Fin/Ain=Fout/Aout
C=KepA/d
Average Molecular Kinetic Energy

38. Thermal expansion
?L=(coefficient of linear expansion)aLinitial?T
Thermal Conductivity
Force of Friction
V=added - I=constant - R= added

39. T = 1/f
Kavg=(3/2)kbT
Period in General
V=constant - I=added - R=1/r added
Fgy=FgSin?

40. F-F or NF-NF
billiard balls - no sticking total energy is conserved
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Vab=Rated voltage-IR (r=internal resistance)
Work

41. PE of a spring
PE=1/2kx²
V=vFt/(m/l)
V=(331 +.6T) T=temp in Celsius
F=kQ1Q2/r² BREAK INTO VECTORS

42. On a banked curve in circular motion - Fn in the y is
Ug= Gm1m2/r
T=2pvl/g
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Fny=FnCos?

43. Force on a charged particle in a magnetic field
Ug= Gm1m2/r
F=Bvsin?q
R=rho L/A A=cross sectional area
V=vFt/(m/l)

44. F(gravity) = -(Gm1m2/r²)
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh
Bernoulli Principal
Force of Gravity
V=IR

45. Engines (2 equations)
P=W/T=FD/T=FV
V=added - I=constant - R= added
QH=QL +W and e=W/QH
KE=1/2mv²

46. A1V1 = A2V2
T=2pvl/g
counterclockwise
Continuity
F=ma

47. Banked curve - sum of the forces in the x
Period in General
Pressure from Depth
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Fx=mv²/r=FnSin?

48. Simple harmonic motion - spring
Power from Force
added in parallel - measures volts - high resistance
T=2pvm/k
?U=Q + W - heat added= heat + work

49. Period for a spring in simple harmonic motion
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
Fb=mf g= rhof Vf g
Fgy=FgSin?
T=2pvm/k

50. Capacitors in series
F=kx
V=added - Q=constant - C= 1/C
Work
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion