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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. Adiabatic process
I=?q/?t
?U=W - no heat added system (Q=0)
T=2pvm/k
Ug= Gm1m2/r

2. Change in pressure
Ug= Gm1m2/r
Ideal Gas Law
?P=rho(g)?h
a=v²/r

3. Couloms law (force between two charged objects)
F=kQ1Q2/r² BREAK INTO VECTORS
1ev=1.6E-19J
V=constant - Q=added - C=added
W=Fd=mad - direction of force must be same as direction of distance

4. 1st right hand rule
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
px and py are conserved
Kinematic with Displacement - Velocity - Acceleration - and Time

5. Force on a current carrying wire in a magnetic field
F=BIL
W=Fd=mad - direction of force must be same as direction of distance
Q=CV
Fy=FnCos?-Fg

6. F-F or NF-NF
F=kQ1Q2/r² BREAK INTO VECTORS
clockwise
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
SG=rho object/10³

7. x = x0 + v0t + ½at²
rho=m/v
V=W/Q=KQ/r NO VECTORS
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Kinematic with Displacement - Velocity - Acceleration - and Time

8. Energy of gravitational attraction
J=?vm=F?t
V=vFt/(m/l)
n1sin?1=n2sin90
Ug= Gm1m2/r

9. Hookes law
?P=rho(g)?h
F=kx
Pin=Pout=Fin/Ain=Fout/Aout
counterclockwise

10. Voltage across a battery terminal
Fny=FnCos?
Vab=Rated voltage-IR (r=internal resistance)
C=KepA/d
V=added - Q=constant - C= 1/C

11. Pascals principle
Pin=Pout=Fin/Ain=Fout/Aout
Fb=mf g= rhof Vf g
Continuity
V=?f

12. e = abs(W/Q)
Efficiency of a Heat Engine
Kinetic Energy
T=2pvl/g
Fx=mv²/r=FnSin?

13. A1V1 = A2V2
QH=QL +W and e=W/QH
Continuity
moment arm - perpendicular distance from the force to the axis of rotation
Ft=0

14. Voltage-charges formula (2)
V=W/Q=KQ/r NO VECTORS
W=KEf-KEi
General Pressure
Ft=0

15. Net work
SG=rho object/10³
a=v²/r
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
W=KEf-KEi

16. Banked curve - sum of the forces in the y
Fy=FnCos?-Fg
F=ma
R=rho L/A A=cross sectional area
Period in General

17. On an inclined plane - gravity in the x
J=?vm=F?t
Adiabatic and isothermal processes ec= TH-TL/
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
Fgx=FgCos?

18. W = F?rcos?
clockwise
F=BIL
Work
Fx=mv²/r=FnSin?

19. H = (kA?T)/L
Thermal Conductivity
?P=rho(g)?h
PE=mgh
V=(331 +.6T) T=temp in Celsius

20. Energy in a capacitor
1/2QV=U
T=2pvm/k
Power from Energy
Archimedes Principle/Bouyancy

21. v = v(3RT)/M = v(3KT)/µ
A1V1=A2V2
Average Speed of each Molecule
Kinematic with Displacement - Velocity - Acceleration - and Time
273K and 1.013E5 pa

22. Banked curve - sum of the forces in the x
V=IR
Fx=mv²/r=FnSin?
T=2pr/v
Continuity

23. Period for a pendulum in simple harmonic motion
px and py are conserved
Continuity
T=2pvl/g
Fgx=FgCos?

24. Magnitude of gravitational forces between objects
PE=1/2kx²
F=Gm1m2/r²
Power from Energy
W=KEf-KEi

25. P = Fvcos?
F=BIL
px and py are conserved
PE=1/2kx²
Power from Force

26. Electric field intensity
Kinetic Energy
PE=mgh
Pin=Pout=Fin/Ain=Fout/Aout
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS

27. EMF (two formulas)
T=2pr/v
counterclockwise
E=-N Change in flux/?t=Blv (v=velocity of the wire)
T=2pvm/k

28. Capacitors in series
Thermal Conductivity
T=2pvl/g
V=added - Q=constant - C= 1/C
?U=W - no heat added system (Q=0)

29. On a banked curve in circular motion - Fn in the y is
?U=W - no heat added system (Q=0)
Kinematic with Displacement - Velocity - Acceleration - and Time
A1V1=A2V2
Fny=FnCos?

30. Simple harmonic motion - pendulum
Pin=Pout=Fin/Ain=Fout/Aout
Vab=Rated voltage-IR (r=internal resistance)
T=2pvl/g
V=constant - Q=added - C=added

31. Simple force equation
Average Speed of each Molecule
Kavg=(3/2)kbT
n1sin?1=n2sin?2
F=ma

32. Vectors in momentum
Gravitational Potential Energy Anywhere
Archimedes Principle/Bouyancy
Kinetic Energy
px and py are conserved

33. Kirchhoffs loop rule [conservation of energy]
Gravitational Potential Energy Anywhere
V=constant - I=added - R=1/r added
sum of voltages must be zero
Average Speed of each Molecule

34. P + pgy + ½pv² = const.
?L=(coefficient of linear expansion)aLinitial?T
Bernoulli Principal
QH=QL +W and e=W/QH
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field

35. Specific gravity
Momentum
V=added - I=constant - R= added
SG=rho object/10³
J=?vm=F?t

36. Basic thermo equation
?U=Q + W - heat added= heat + work
n1sin?1=n2sin?2
in series - measures current - low resistance
W=KEf-KEi

37. Simple harmonic motion - spring
V=IR
n1sin?1=n2sin90
T=2pvm/k
rho=m/v

38. PV = nRT = NkT
I=?q/?t
T=2pvm/k
F=Gm1m2/r²
Ideal Gas Law

39. Total internal reflection
a=v²/r
n1sin?1=n2sin90
V=constant - Q=added - C=added
Kinematic with Displacement - Velocity - Acceleration - and Time

40. Power - simple formula (mechanics)
P=W/T=FD/T=FV
C=KepA/d
W=Fd=mad - direction of force must be same as direction of distance
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit

41. Capacitance
Q=CV
Spring Potential Energy
Centripetal Acceleration
Efficiency of an Ideal Engine

42. Kinetic energy
KE=1/2mv²
General Pressure
Period in General
F=ma

43. a(centripetal) = v²/r
Average Molecular Kinetic Energy
Centripetal Acceleration
moment arm - perpendicular distance from the force to the axis of rotation
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh

44. F-NF or vice versa
Adiabatic and isothermal processes ec= TH-TL/
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
Spring Potential Energy

45. 3rd right hand rule
KE=1/2mv²
f=mv²/r
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
Average Molecular Kinetic Energy

46. Voltmeter
n1sin?1=n2sin90
added in parallel - measures volts - high resistance
A1V1=A2V2
General Pressure

47. Natural frequency open tube/not in a tub
L=n/4? has to be odd numbers
L=n/2?
PE=1/2kx²
Force of Friction

48. Vsound
clockwise
a=v²/r
V=Ed
V=(331 +.6T) T=temp in Celsius

49. Period for circular motion
Period in General
W=Fd=mad - direction of force must be same as direction of distance
Temperature is constant - ?U=0 - -Q=W
T=2pr/v

50. Engines (2 equations)
Fb=mf g= rhof Vf g
Efficiency of a Heat Engine
E=-N Change in flux/?t=Blv (v=velocity of the wire)
QH=QL +W and e=W/QH