Test your basic knowledge |

AP Physics B: Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. P + pgy + ½pv² = const.
V=constant - Q=added - C=added
in series - measures current - low resistance
QH=QL +W and e=W/QH
Bernoulli Principal

2. Capacitors in series
P=W/T=FD/T=FV
V=added - Q=constant - C= 1/C
A1V1=A2V2
Thermal Conductivity

3. v = v(3RT)/M = v(3KT)/µ
Average Speed of each Molecule
V=W/Q=KQ/r NO VECTORS
General Pressure
L=n/2?

4. Thermal expansion
?L=(coefficient of linear expansion)aLinitial?T
Spring Potential Energy
Ideal Gas Law
Centripetal Acceleration

5. Specific gravity
counterclockwise
V=(331 +.6T) T=temp in Celsius
Power from Energy
SG=rho object/10³

6. Parallel Circuits
Temperature is constant - ?U=0 - -Q=W
V=added - Q=constant - C= 1/C
V=constant - I=added - R=1/r added
P=IV

7. Change in pressure
a=v²/r
?P=rho(g)?h
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
Average Speed of each Molecule

8. natural frequencies in a closed tube
F=kQ1Q2/r² BREAK INTO VECTORS
L=n/4? has to be odd numbers
T=2pvl/g
Fnx=FnSin?

9. Period for a spring in simple harmonic motion
Kinematic with Displacement - Velocity - Acceleration - and Time
KE=1/2mv²
T=2pvm/k
?U=Q + W - heat added= heat + work

10. The three kinematics equations
Vf=Vi+ at - Vf²=Vi² +2ad - d=1/2 a t² +vit
Fy=FnCos?-Fg
KE=1/2mv²
Work

11. P = Fvcos?
q=K?AT/L
R=rho L/A A=cross sectional area
Power from Force
Fb=mf g= rhof Vf g

12. Voltage (circuts)
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
F=BIL
V=IR
Kinematic with Displacement - Velocity - Acceleration - and Time

13. Absolute pressure
on a solenoid wrap finger around direction of current - thumb will point in north pole direction
P=Patm + rho g h
Adiabatic and isothermal processes ec= TH-TL/
t=Fr - force must be perpendicular to the moment arm and the axis of rotation

14. Carnot engine
P=W/T=FD/T=FV
q=K?AT/L
PE=mgh
Adiabatic and isothermal processes ec= TH-TL/

15. Electron volts
Adiabatic and isothermal processes ec= TH-TL/
1ev=1.6E-19J
T=2pvl/g
R=rho L/A A=cross sectional area

16. 2nd right hand rule
E=-N Change in flux/?t=Blv (v=velocity of the wire)
1ev=1.6E-19J
Average Speed of each Molecule
on a solenoid wrap finger around direction of current - thumb will point in north pole direction

17. H = (kA?T)/L
F=kx
1/2QV=U
Thermal Conductivity
Pin=Pout=Fin/Ain=Fout/Aout

18. snells law
Ug= Gm1m2/r
Power from Energy
n1sin?1=n2sin?2
PE=mgh

19. Voltage-parallel plates
E=-N Change in flux/?t=Blv (v=velocity of the wire)
V=added - I=constant - R= added
V=Ed
W=KEf-KEi

20. Capacitance
Q=CV
Sum of all currents (I) entering=sum of all currents (I) leaving
billiard balls - no sticking total energy is conserved
a=v²/r

21. F(buoy) = pVg
Archimedes Principle/Bouyancy
QH=QL +W and e=W/QH
F=ma
Power from Force

22. Simple density formula
P1atm + 1/2rhoV1² + rhogh= P2atm + 1/2rhoV2² + rhogh
rho=m/v
E=F/q (point charge)=KQ1/r² BREAK INTO VECTORS
?v=0 - w=0 area under the curve is zero

23. On a banked curve in circular motion - Fn in the y is
Fny=FnCos?
W=Fd=mad - direction of force must be same as direction of distance
R=rho L/A A=cross sectional area
Momentum

24. torque
?L=(coefficient of linear expansion)aLinitial?T
V=IR
Flux (in webers)=Bcos?A
t=Fr - force must be perpendicular to the moment arm and the axis of rotation

25. a(centripetal) = v²/r
?U=Q + W - heat added= heat + work
V=IR
Centripetal Acceleration
Sum of all currents (I) entering=sum of all currents (I) leaving

26. Capacitors in parallel
V=?f
Fnx=FnSin?
t=Fr - force must be perpendicular to the moment arm and the axis of rotation
V=constant - Q=added - C=added

27. Flux
1/2QV=U
Flux (in webers)=Bcos?A
Fnet=Fb-Fg
Fgx=FgCos?

28. Couloms law (force between two charged objects)
F=kx
?v=0 - w=0 area under the curve is zero
Gravitational Potential Energy Anywhere
F=kQ1Q2/r² BREAK INTO VECTORS

29. Adiabatic process
?L=(coefficient of linear expansion)aLinitial?T
?U=W - no heat added system (Q=0)
a=v²/r
V=constant - Q=added - C=added

30. Pascals principle
Efficiency of an Ideal Engine
P=F/A=rho(g)h
Pin=Pout=Fin/Ain=Fout/Aout
Fnet=Fb-Fg

31. Net work
V=W/Q=KQ/r NO VECTORS
W=KEf-KEi
a=v²/r
Fgy=FgSin?

32. v = v0 + at
Centripetal Acceleration
V=W/Q=KQ/r NO VECTORS
Kinematic with Velocity - Acceleration - and Time
L=n/2?

33. Velocity of a wave
T=2pvm/k
PV=nRT - PV=N (# of molecules)kb (bozons constant)T
V=?f
P=mv (Kg m/s) or (N s)

34. r in torque
?v=0 - w=0 area under the curve is zero
Fx=mv²/r=FnSin?
moment arm - perpendicular distance from the force to the axis of rotation
Fnet=Fb-Fg

35. A1V1 = A2V2
Continuity
in series - measures current - low resistance
L=n/4? has to be odd numbers
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal

36. Net force/apparent weight broken done
Fnet=rhofluid vfluid g -rho object vobject g where the volumes are usually equal
Kinematic with Displacement - Velocity - Acceleration - and Time
T=2pvl/g
v3kT/m [mass per molecule] - v3RT/M [molar mass]

37. Force buoyancy (2 formulas)
billiard balls - no sticking total energy is conserved
n1sin?1=n2sin90
Fb=mf g= rhof Vf g
A1V1=A2V2

38. e = abs(W/Q)
QH=QL +W and e=W/QH
Efficiency of a Heat Engine
Pin=Pout=Fin/Ain=Fout/Aout
Continuity

39. Banked curve - sum of the forces in the y
QH=QL +W and e=W/QH
Fgy=FgSin?
Fy=FnCos?-Fg
Adiabatic and isothermal processes ec= TH-TL/

40. 3rd right hand rule
thumb in direction of proton - fingers in direction of magnetic field and palm will show you force
Efficiency of a Heat Engine
Power from Energy
J=?vm=F?t

41. Average kinetic energy
Ft=0
Average Molecular Kinetic Energy
Kavg=(3/2)kbT
V=W/Q=KQ/r NO VECTORS

42. F-NF or vice versa
Constructive: 2t=m?+1/2? - Destructive: 2t=m?
J=?vm=F?t
sum of voltages must be zero
?U=W - no heat added system (Q=0)

43. Natural frequency open tube/not in a tub
L=n/2?
F=ma
C=KepA/d
F=kx

44. U(gravitational) = -(Gm1m2/r)
Gravitational Potential Energy Anywhere
PE=1/2kx²
Momentum
?P=rho(g)?h

45. Hookes law
Efficiency of a Heat Engine
Fx=mv²/r=FnSin?
q=K?AT/L
F=kx

46. Ideal gas laws
Continuity
Constructive: 2t=m? - Destructive: 2t=m?+1/2?
V=added - I=constant - R= added
PV=nRT - PV=N (# of molecules)kb (bozons constant)T

47. Voltmeter
C=KepA/d
Bernoulli Principal
added in parallel - measures volts - high resistance
P=IV

48. Engines (2 equations)
Pressure is constant ?P=0 w=-P?V
QH=QL +W and e=W/QH
Vab=Rated voltage-IR (r=internal resistance)
C=KepA/d

49. Force on a charged particle in a magnetic field
I=?q/?t
P=mv (Kg m/s) or (N s)
Efficiency of an Ideal Engine
F=Bvsin?q

50. On a banked curve in circular motion - Fn in the x is
Q=CV
Fnx=FnSin?
R=rho L/A A=cross sectional area
W is positive when work is done on the system - compression - W is negative when work is done by the system - expansion