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AP Physics 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. formula for constructive interference in a diffraction grating
BLv
dSintheta=mwavelength
VI
joules/second

2. focal length of a mirror with radius d
no force (right hand rule)
d/2
((Th) -(Tl))/(Th)
BLv

3. electric field in a distance r from a charge
k|Q|/r^2
2Pi * sqrt(l/g)
1/((1/C)+(1/C)..........)
GM*M/(r^2)

4. forgotten power equation
VI
dSintheta=mwavelength
FV
inelastic collision

5. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
(3/2)nRdeltaT
.5mV^2 + .5KA^2
V^2=(Vo)^2 +2a*change in x

6. isothermal
1/4wavelength
G M/((d/2)^2)
Columbs/second
no temp change

7. voltage induced in a rod moving through a uniform magnetic field
qVB
FV
((Th) -(Tl))/(Th)
BLv

8. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
deltaU = deltaQ + deltaW
(Fn)(mu)
.5KA^2

9. adibatic
joules/second
no heat flow
inelastic collision
constant pressure

10. formula for power with current and voltage
.5CV^2 or .5 Q^2/C or .5QV
qrB/m
d/2
VI

11. electric potential a distance r from a charge
qE
KQ/r
V^2=(Vo)^2 +2a*change in x
(I^2)RT

12. formula for finding the momentum of a photon
.5mV^2 + .5KA^2
V+IR
h/wavelength
E/B

13. new frequency of light as it enters a new substance
MC(deltaT)
mV -m(Vo)
frequency never changes for light problems
no force (right hand rule)

14. formula for change in internal energy in a cosnstat volume PV process
Columbs/second
(3/2)nRdeltaT
VI
Ed=V

15. hooke's law force of a spring
(N2)/(N1)
(3/2)nRdeltaT
V^2=(Vo)^2 +2a*change in x
-KA

16. new wavelength of light as it enters a new substance
2nt=mwavelength
elastic collision
(No)(wavelength)=(Nn)(new wavelength)
roeVg

17. heat required to change temperature of a substance
d/2
no force (right hand rule)
qE
MC(deltaT)

18. magnification equation
(Di)/(Do) or (Hi)/(Ho)
1/((1/C)+(1/C)..........)
sqrt(3KT/m)
constant pressure

19. the force on a charge in an electric field
F/A
qE
qrB/m
(Di)/(Do) or (Hi)/(Ho)

20. formula for charge stored in a capciator
1/4wavelength
Q=CV
1/((1/C)+(1/C)..........)
qV

21. formula for Carnot efficiency
((Th) -(Tl))/(Th)
mV -m(Vo)
(I^2)R
elastic collision

22. equation of continuity
delta x = (Vo)t + .5at^2
AV=(A2)(V2)
rF
J= Ft

23. what direction is friction?
BLv
.5CV^2 or .5 Q^2/C or .5QV
1/4wavelength
opposite motion

24. formula for finding magnetic flux
BA
Ed=V
mgCostheta(mu)d
((Qin) -(Qout))/(Qin)

25. formula for finding the work function of a metal if the cutoff frequency is known
M(Lf)
inelastic collision
h(Fo)
no force (right hand rule)

26. formula equating energy and mass
e=mc^2
rF
.5KA^2
1/((1/C)+(1/C)..........)

27. pressure
qVB
BA
F/A
(N2)/(N1)

28. formula for power with Voltage and resistance
k|Q|/r^2
qVB
(V^2)/R
qV

29. heat required to melt a substance
qE
Joules/Columb
M(Lf)
(No)(wavelength)=(Nn)(new wavelength)

30. formula to find the absoluate pressure at the bottom of a pool
-KA
(Patm) + (Pgauge)
E/B
e=mc^2

31. formula for energy of a spring mass when spring is at maximum displacement
(V^2)/r
.5KA^2
(Di)/(Do) or (Hi)/(Ho)
roegh

32. formula for critical angle
.5CV^2 or .5 Q^2/C or .5QV
BLv
(N2)/(N1)
n(Cv)(deltaT)

33. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(Wnet)/(Qin)
(EMF)Rt/10
qV
no force (right hand rule)

34. force a charge in a Bfield
(Di)/(Do) or (Hi)/(Ho)
pL/A
(I^2)RT
qVB

35. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
1/4wavelength
m(v^2)/qvB
opposite motion

36. natural frequency of a closed tube of length L
1/4wavelength
(I^2)RT
V+IR
((Qin) -(Qout))/(Qin)

37. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
GM*M/(r^2)
(Wnet)/(Qin)
rF

38. force of frction on an incline
(1/Do) + (1/Di) = (1/f)
mgCostheta(mu)d
MC(deltaT)
(hc/wavelength)=h(Fo) +(Vs)

39. units for voltage other than volts
V+IR
d/2
nSintheta=nsintheta
Joules/Columb

40. formula for period of a pendulum
K |q||Q|/r^2
2Pi * sqrt(l/g)
frequency never changes for light problems
0

41. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
M(Lf)
hc/wavelength
roegh

42. the electric force between two objects of charge Q
E/B
0
K |q||Q|/r^2
(No)(wavelength)=(Nn)(new wavelength)

43. change in internal energy during a cyclic process
E/B
0
no temp change
(No)(wavelength)=(Nn)(new wavelength)

44. type of collision where objects stick togerther
perfectly inelastic collision
sqrt(T/(m/))
qE
qrB/m

45. formula to find the gauge pressure at the bottom of a pool
KI/r
roegh
KQ/r
(EMF)Rt/10

46. force of gravity between two objects of mass m
joules/second
Joules/Columb
GM*M/(r^2)
V^2=(Vo)^2 +2a*change in x

47. formula for finding the magnetic field a distance r from a current carrying wire
.5CV^2 or .5 Q^2/C or .5QV
pL/A
KI/r
K |q||Q|/r^2

48. resistance of a wire
pL/A
no temp change
(hc/wavelength)=h(Fo) +(Vs)
frequency never changes for light problems

49. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
no force (right hand rule)
perfectly inelastic collision
.5mV^2 + .5KA^2
h/wavelength

50. formula for buoyant force
roeVg
pL/A
E/B
(1/Do) + (1/Di) = (1/f)