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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. Engines (2 equations)
QH=QL +W and e=W/QH
Spring Potential Energy
T=2pvm/k
V=W/Q=KQ/r NO VECTORS

2. P = Fvcos?
Continuity
P=Patm + rho g h
P=W/T=FD/T=FV
Power from Force

3. Dialectrics insulating sheet between plates
C=KepA/d
?U=Q + W - heat added= heat + work
Average Speed of each Molecule
Constructive: 2t=m?+1/2? - Destructive: 2t=m?

4. Parallel Circuits
SG=rho object/10³
F=Gm1m2/r²
V=constant - I=added - R=1/r added
Thermal Conductivity

5. Isobaric process
F=BIL
Force of Spring
Pressure is constant ?P=0 w=-P?V
PV=nRT - PV=N (# of molecules)kb (bozons constant)T

6. The three kinematics equations
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
f=mv²/r
P=mv (Kg m/s) or (N s)
Sum of all currents (I) entering=sum of all currents (I) leaving

7. Force on a charged particle in a magnetic field
T=2pvm/k
F=Bvsin?q
V=?f
KE=1/2mv²

8. Force on a current carrying wire in a magnetic field
F=BIL
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Efficiency of a Heat Engine
QH=QL +W and e=W/QH

9. v = v0 + at
Kinematic with Velocity - Acceleration - and Time
Continuity
Fnx=FnSin?
Kinetic Energy

10. heat flow through a window or door
q=K?AT/L
P=mv (Kg m/s) or (N s)
Power from Energy
Centripetal Acceleration

11. Impulse
J=?vm=F?t
counterclockwise
billiard balls - no sticking total energy is conserved
E=-N Change in flux/?t=Blv (v=velocity of the wire)

12. Series Circuits
Continuity
V=added - I=constant - R= added
Sum of all currents (I) entering=sum of all currents (I) leaving
q=K?AT/L

13. Power (circuts)
V=constant - Q=added - C=added
Momentum
L=n/4? has to be odd numbers
P=IV

14. Ammeter
R=rho L/A A=cross sectional area
in series - measures current - low resistance
Momentum
I=?q/?t

15. K = (3/2)kT
Average Molecular Kinetic Energy
counterclockwise
Bernoulli Principal
E=-N Change in flux/?t=Blv (v=velocity of the wire)

16. Average kinetic energy
Kavg=(3/2)kbT
Power from Energy
Sum of all currents (I) entering=sum of all currents (I) leaving
V=Ed

17. a(centripetal) = v²/r
Ug= Gm1m2/r
Centripetal Acceleration
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
f=mv²/r

18. Centripetal acceleration
General Pressure
a=v²/r
Efficiency of a Heat Engine
Fy=FnCos?-Fg

19. x = x0 + v0t + ½at²
Spring Potential Energy
Temperature is constant - ?U=0 - -Q=W
Fx=mv²/r=FnSin?
Kinematic with Displacement - Velocity - Acceleration - and Time

20. Capacitors in parallel
V=constant - Q=added - C=added
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Ft=0
T=2pvl/g

21. 2nd right hand rule
V=added - I=constant - R= added
T=2pr/v
F=kx
on a solenoid wrap finger around direction of current - thumb will point in north pole direction

22. Total internal reflection
Average Speed of each Molecule
Work
n1sin?1=n2sin90
V=W/Q=KQ/r NO VECTORS

23. Momentum
Period in General
P=mv (Kg m/s) or (N s)
P=W/T=FD/T=FV
v3kT/m [mass per molecule] - v3RT/M [molar mass]

24. Kirchhoffs loop rule [conservation of energy]
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
sum of voltages must be zero
T=2pvm/k
L=n/2?

25. Simple force equation
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
Continuity
Ft=0
F=ma

26. Continuity equation [Conservation of mass]
V=?f
PE=mgh
Kinematic with Velocity - Acceleration - and Displacement
A1V1=A2V2

27. Isothermal process
Temperature is constant - ?U=0 - -Q=W
V=constant - I=added - R=1/r added
?v=0 - w=0 area under the curve is zero
Centripetal Acceleration

28. 1st right hand rule
?U=W - no heat added system (Q=0)
SG=rho object/10³
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
?U=Q + W - heat added= heat + work

29. Isovolumetric/isochoric
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Fx=mv²/r=FnSin?
Kinematic with Velocity - Acceleration - and Displacement
?v=0 - w=0 area under the curve is zero

30. Work - simple formula
V=constant - I=added - R=1/r added
J=?vm=F?t
W=Fd=mad - direction of force must be same as direction of distance
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field

31. Pascals principle
Pin=Pout=Fin/Ain=Fout/Aout
C=KepA/d
I=?q/?t
T=2pvl/g

32. Standard pressure and temperature and pressure
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
273K and 1.013E5 pa
V=added - Q=constant - C= 1/C
F=Bvsin?q

33. Current
?P=rho(g)?h
I=?q/?t
Force of Spring
sum of voltages must be zero

34. Vectors in momentum
Fgy=FgSin?
Force of Friction
Efficiency of a Heat Engine
px and py are conserved

35. Velocity of sound in a strong
V=IR
V=vFt/(m/l)
SG=rho object/10³
v3kT/m [mass per molecule] - v3RT/M [molar mass]

36. Adiabatic process
General Pressure
Vab=Rated voltage-IR (r=internal resistance)
?U=W - no heat added system (Q=0)
P=Patm + rho g h

37. U(gravitational) = -(Gm1m2/r)
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
F=BIL
Gravitational Potential Energy Anywhere
billiard balls - no sticking total energy is conserved

38. Voltage across a battery terminal
P=F/A=rho(g)h
P=Patm + rho g h
F=kx
Vab=Rated voltage-IR (r=internal resistance)

39. F(spring) = -kx
R=rho L/A A=cross sectional area
F=Gm1m2/r²
Force of Spring
Thermal Conductivity

40. Carnot engine
Adiabatic and isothermal processes ec= TH-TL/
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
PE=mgh
n1sin?1=n2sin?2

41. Electron volts
Kinematic with Velocity - Acceleration - and Time
Ideal Gas Law
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
1ev=1.6E-19J

42. K = ½mv²
Pressure is constant ?P=0 w=-P?V
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
PE=1/2kx²
Kinetic Energy

43. Voltmeter
Pin=Pout=Fin/Ain=Fout/Aout
V=vFt/(m/l)
QH=QL +W and e=W/QH
added in parallel - measures volts - high resistance

44. natural frequencies in a closed tube
F=Bvsin?q
Q=CV
L=n/4? has to be odd numbers
V=W/Q=KQ/r NO VECTORS

45. F-F or NF-NF
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Efficiency of a Heat Engine
E=-N Change in flux/?t=Blv (v=velocity of the wire)
T=2pvm/k

46. On an inclined plane - gravity in the y
Thermal Conductivity
Bernoulli Principal
QH=QL +W and e=W/QH
Fgy=FgSin?

47. On a banked curve in circular motion - Fn in the y is
billiard balls - no sticking total energy is conserved
f=mv²/r
Fny=FnCos?
Adiabatic and isothermal processes ec= TH-TL/

48. v² = v0² + 2a(x-x0)
E=-N Change in flux/?t=Blv (v=velocity of the wire)
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
?L=(coefficient of linear expansion)aLinitial?T
Kinematic with Velocity - Acceleration - and Displacement

49. W = F?rcos?
n1sin?1=n2sin90
Fnx=FnSin?
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
Work

50. A1V1 = A2V2
moment arm - perpendicular distance from the force to the axis of rotation
F=Bvsin?q
Continuity
V=(331 +.6T) T=temp in Celsius