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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. Pressure (2 formulas)
General Pressure
P=F/A=rho(g)h
Pin=Pout=Fin/Ain=Fout/Aout
Constructive: 2t=m? - Destructive: 2t=m?+1/2?

2. v² = v0² + 2a(x-x0)
1/2QV=U
Kinematic with Velocity - Acceleration - and Displacement
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Archimedes Principle/Bouyancy

3. Period for a pendulum in simple harmonic motion
T=2pvl/g
v3kT/m [mass per molecule] - v3RT/M [molar mass]
V=(331 +.6T) T=temp in Celsius
E=-N Change in flux/?t=Blv (v=velocity of the wire)

4. Couloms law (force between two charged objects)
F=kQ1Q2/r² BREAK INTO VECTORS
Force of Spring
Q=CV
Force of Friction

5. K = ½mv²
Force of Gravity
KE=1/2mv²
Kinetic Energy
a=v²/r

6. Net force/apparent weight in forces
Fnet=Fb-Fg
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Gravitational Potential Energy Anywhere
counterclockwise

7. vrms (2 equations)
A1V1=A2V2
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Pressure from Depth
Spring Potential Energy

8. Voltage across a battery terminal
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Vab=Rated voltage-IR (r=internal resistance)
I=?q/?t
?U=Q + W - heat added= heat + work

9. Electric field intensity
KE=1/2mv²
P=mv (Kg m/s) or (N s)
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS

10. F-NF or vice versa
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
Efficiency of an Ideal Engine
?P=rho(g)?h
E=-N Change in flux/?t=Blv (v=velocity of the wire)

11. Force on a current carrying wire in a magnetic field
n1sin?1=n2sin90
Power from Force
A1V1=A2V2
F=BIL

12. Standard pressure and temperature and pressure
1ev=1.6E-19J
Kinematic with Displacement - Velocity - Acceleration - and Time
273K and 1.013E5 pa
T=2pvl/g

13. natural frequencies in a closed tube
V=added - Q=constant - C= 1/C
F=kQ1Q2/r² BREAK INTO VECTORS
L=n/4? has to be odd numbers
Force of Gravity

14. Current
Fgx=FgCos?
Force of Friction
Efficiency of a Heat Engine
I=?q/?t

15. 3rd right hand rule
Fb=mf g= rhof Vf g
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
General Pressure
Fnx=FnSin?

16. Isovolumetric/isochoric
Force of Gravity
?v=0 - w=0 area under the curve is zero
P=F/A=rho(g)h
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal

17. F(gravity) = -(Gm1m2/r²)
Average Speed of each Molecule
n1sin?1=n2sin90
Force of Gravity
Constructive: 2t=m?+1/2? - Destructive: 2t=m?

18. Total internal reflection
n1sin?1=n2sin90
SG=rho object/10³
F=kx
Momentum

19. Simple harmonic motion - spring
Efficiency of an Ideal Engine
?P=rho(g)?h
T=2pvm/k
Adiabatic and isothermal processes ec= TH-TL/

20. v = v(3RT)/M = v(3KT)/µ
Efficiency of a Heat Engine
moment arm - perpendicular distance from the force to the axis of rotation
Fy=FnCos?-Fg
Average Speed of each Molecule

21. Electron volts
General Pressure
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
Efficiency of an Ideal Engine
1ev=1.6E-19J

22. Specific gravity
V=W/Q=KQ/r NO VECTORS
Power from Energy
SG=rho object/10³
Fb=mf g= rhof Vf g

23. Voltage (circuts)
Vab=Rated voltage-IR (r=internal resistance)
V=constant - Q=added - C=added
V=IR
L=n/4? has to be odd numbers

24. Period for a spring in simple harmonic motion
F=Bvsin?q
Q=CV
px and py are conserved
T=2pvm/k

25. On a banked curve in circular motion - Fn in the x is
Fnx=FnSin?
Vab=Rated voltage-IR (r=internal resistance)
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh
Fny=FnCos?

26. PE of a spring
Fgy=FgSin?
PE=1/2kx²
T=2pvl/g
Momentum

27. Voltage-charges formula (2)
rho=m/v
T=2pvl/g
Fy=FnCos?-Fg
V=W/Q=KQ/r NO VECTORS

28. Isothermal process
Momentum
P=mv (Kg m/s) or (N s)
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
Temperature is constant - ?U=0 - -Q=W

29. P = P0 + pgh
Centripetal Acceleration
Kinematic with Velocity - Acceleration - and Time
Pressure from Depth
SG=rho object/10³

30. F(spring) = -kx
Force of Spring
v3kT/m [mass per molecule] - v3RT/M [molar mass]
Efficiency of a Heat Engine
a=v²/r

31. Isobaric process
?U=Q + W - heat added= heat + work
Pressure is constant ?P=0 w=-P?V
Spring Potential Energy
rho=m/v

32. Velocity of a wave
?L=(coefficient of linear expansion)aLinitial?T
F=Gm1m2/r²
V=?f
P=F/A=rho(g)h

33. snells law
Pin=Pout=Fin/Ain=Fout/Aout
E=-N Change in flux/?t=Blv (v=velocity of the wire)
n1sin?1=n2sin?2
Momentum

34. Centripetal force
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion
P=mv (Kg m/s) or (N s)
f=mv²/r

35. Force buoyancy (2 formulas)
Fb=mf g= rhof Vf g
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
PE=mgh
clockwise

36. Dialectrics insulating sheet between plates
P=W/T=FD/T=FV
C=KepA/d
Kavg=(3/2)kbT
T=2pvl/g

37. K = (3/2)kT
F=ma
Average Molecular Kinetic Energy
Spring Potential Energy
Adiabatic and isothermal processes ec= TH-TL/

38. Net force/apparent weight broken done
Period in General
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
QH=QL +W and e=W/QH
Efficiency of a Heat Engine

39. A1V1 = A2V2
T=2pr/v
Pin=Pout=Fin/Ain=Fout/Aout
Work
Continuity

40. Simple density formula
I=?q/?t
rho=m/v
Kavg=(3/2)kbT
W=KEf-KEi

41. On an inclined plane - gravity in the y
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
Momentum
Period in General
Fgy=FgSin?

42. Centripetal acceleration
counterclockwise
Kinematic with Velocity - Acceleration - and Displacement
a=v²/r
Force of Friction

43. U(gravitational) = -(Gm1m2/r)
Fb=mf g= rhof Vf g
J=?vm=F?t
Gravitational Potential Energy Anywhere
F=ma

44. e = (T(hot) - T(cold))/T(hot)
Fnet=Fb-Fg
rho=m/v
Efficiency of an Ideal Engine
L=n/2?

45. torque
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
L=n/4? has to be odd numbers
1ev=1.6E-19J

46. P + pgy + ½pv² = const.
billiard balls - no sticking total energy is conserved
Bernoulli Principal
Ug= Gm1m2/r
F=ma

47. Natural frequency open tube/not in a tub
f=mv²/r
L=n/2?
Adiabatic and isothermal processes ec= TH-TL/
Spring Potential Energy

48. Banked curve - sum of the forces in the x
Fx=mv²/r=FnSin?
Ug= Gm1m2/r
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
V=(331 +.6T) T=temp in Celsius

49. P = Fvcos?
Power from Force
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
Efficiency of an Ideal Engine
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit

50. Force on a charged particle in a magnetic field
General Pressure
Kavg=(3/2)kbT
F=Bvsin?q
?P=rho(g)?h