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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. P = Fvcos?
Power from Force
V=W/Q=KQ/r NO VECTORS
SG=rho object/10³
clockwise

2. A1V1 = A2V2
moment arm - perpendicular distance from the force to the axis of rotation
L=n/4? has to be odd numbers
Continuity
F=Gm1m2/r²

3. Bernoulli's Equation [Conservation of energy]
P=Patm + rho g h
Ideal Gas Law
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh
V=W/Q=KQ/r NO VECTORS

4. Ammeter
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
1/2QV=U
in series - measures current - low resistance
General Pressure

5. Period for a pendulum in simple harmonic motion
T=2pvl/g
Q=CV
Centripetal Acceleration
1/2QV=U

6. PV = nRT = NkT
Ideal Gas Law
Pressure from Depth
P=IV
q=K?AT/L

7. U(gravitational) = -(Gm1m2/r)
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
V=W/Q=KQ/r NO VECTORS
Gravitational Potential Energy Anywhere
I=?q/?t

8. Continuity equation [Conservation of mass]
F=kQ1Q2/r² BREAK INTO VECTORS
A1V1=A2V2
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit

9. Simple harmonic motion - pendulum
V=added - Q=constant - C= 1/C
PE=1/2kx²
V=?f
T=2pvl/g

10. Hookes law
F=kx
1ev=1.6E-19J
A1V1=A2V2
Kinematic with Velocity - Acceleration - and Displacement

11. Simple density formula
KE=1/2mv²
Adiabatic and isothermal processes ec= TH-TL/
rho=m/v
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal

12. Change in pressure
Thermal Conductivity
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
?P=rho(g)?h
Period in General

13. 1st right hand rule
273K and 1.013E5 pa
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
A1V1=A2V2
R=rho L/A A=cross sectional area

14. Flux
Flux (in webers)=Bcos?A
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
a=v²/r

15. F-F or NF-NF
L=n/4? has to be odd numbers
V=added - Q=constant - C= 1/C
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
A1V1=A2V2

16. On an inclined plane - gravity in the x
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
Fgx=FgCos?
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
V=constant - Q=added - C=added

17. Magnitude of gravitational forces between objects
T=2pr/v
V=constant - Q=added - C=added
F=Gm1m2/r²
Pressure is constant ?P=0 w=-P?V

18. Force on a current carrying wire in a magnetic field
F=BIL
Flux (in webers)=Bcos?A
Power from Energy
T=2pr/v

19. Net force/apparent weight in forces
Fnet=Fb-Fg
T=2pvl/g
Force of Gravity
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS

20. Electric field intensity
Momentum
V=(331 +.6T) T=temp in Celsius
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
T=2pvl/g

21. Kirchhoffs loop rule [conservation of energy]
clockwise
sum of voltages must be zero
Continuity
a=v²/r

22. torque
clockwise
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
F=Gm1m2/r²
Fnet=Fb-Fg

23. T = 1/f
sum of voltages must be zero
Period in General
L=n/4? has to be odd numbers
v3kT/m [mass per molecule] - v3RT/M [molar mass]

24. 3rd right hand rule
Thermal Conductivity
F=kQ1Q2/r² BREAK INTO VECTORS
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
SG=rho object/10³

25. Isovolumetric/isochoric
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Fb=mf g= rhof Vf g
P=F/A=rho(g)h
?v=0 - w=0 area under the curve is zero

26. Period for a spring in simple harmonic motion
E=-N Change in flux/?t=Blv (v=velocity of the wire)
V=added - I=constant - R= added
T=2pvm/k
Average Speed of each Molecule

27. On an inclined plane - gravity in the y
Efficiency of an Ideal Engine
Fgy=FgSin?
Fy=FnCos?-Fg
W=KEf-KEi

28. heat flow through a window or door
q=K?AT/L
f=mv²/r
?v=0 - w=0 area under the curve is zero
Pin=Pout=Fin/Ain=Fout/Aout

29. Engines (2 equations)
I=?q/?t
QH=QL +W and e=W/QH
SG=rho object/10³
Thermal Conductivity

30. Velocity of a wave
V=?f
Fnet=Fb-Fg
QH=QL +W and e=W/QH
1/2QV=U

31. P = F/A
added in parallel - measures volts - high resistance
General Pressure
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force

32. Adiabatic process
moment arm - perpendicular distance from the force to the axis of rotation
?U=W - no heat added system (Q=0)
V=vFt/(m/l)
n1sin?1=n2sin90

33. Voltage-parallel plates
Pressure is constant ?P=0 w=-P?V
Force of Gravity
V=Ed
added in parallel - measures volts - high resistance

34. K = ½mv²
273K and 1.013E5 pa
Kinetic Energy
P=F/A=rho(g)h
P=Patm + rho g h

35. Parallel Circuits
V=constant - I=added - R=1/r added
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Kinetic Energy
PE=mgh

36. Net force/apparent weight broken done
V=W/Q=KQ/r NO VECTORS
Thermal Conductivity
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
P=IV

37. e = (T(hot) - T(cold))/T(hot)
Thermal Conductivity
Efficiency of an Ideal Engine
Kinematic with Displacement - Velocity - Acceleration - and Time
V=constant - I=added - R=1/r added

38. Total internal reflection
Force of Friction
shows magnetic field created by a current. Thumb in direction of the current - fingers show direction of field
Work
n1sin?1=n2sin90

39. Pressure (2 formulas)
T=2pvl/g
P=F/A=rho(g)h
T=2pr/v
P=W/T=FD/T=FV

40. Centripetal force
A1V1=A2V2
Efficiency of a Heat Engine
f=mv²/r
PE=mgh

41. P(avg) = W/?t
PE=1/2kx²
Power from Energy
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
1/2QV=U

42. P = P0 + pgh
KE=1/2mv²
273K and 1.013E5 pa
Fgy=FgSin?
Pressure from Depth

43. Critical speed is
Efficiency of an Ideal Engine
Ft=0
added in parallel - measures volts - high resistance
Average Speed of each Molecule

44. Capacitance
v3kT/m [mass per molecule] - v3RT/M [molar mass]
KE=1/2mv²
T=2pvl/g
Q=CV

45. Centripetal acceleration
Power from Energy
a=v²/r
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
V=constant - Q=added - C=added

46. Electron volts
1ev=1.6E-19J
v3kT/m [mass per molecule] - v3RT/M [molar mass]
W=KEf-KEi
f=mv²/r

47. F(buoy) = pVg
Sum of all currents (I) entering=sum of all currents (I) leaving
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
rho=m/v
Archimedes Principle/Bouyancy

48. Kinetic energy
KE=1/2mv²
sum of voltages must be zero
P=Patm + rho g h
P=F/A=rho(g)h

49. snells law
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Power from Energy
1/2QV=U
n1sin?1=n2sin?2

50. W
q=K?AT/L
?v=0 - w=0 area under the curve is zero
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
Fy=FnCos?-Fg