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AP Physics 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. snells law
e=mc^2
1/((1/C)+(1/C)..........)
nSintheta=nsintheta
sqrt(T/(m/))

2. natural frequency of a closed tube of length L
no heat flow
1/4wavelength
elastic collision
e=mc^2

3. heat required to melt a substance
M(Lf)
deltaU = deltaQ + deltaW
V^2=(Vo)^2 +2a*change in x
(I^2)RT

4. force of friction
delta x = (Vo)t + .5at^2
VI
(Fn)(mu)
deltaU = deltaQ + deltaW

5. formula for finding magnetic flux
Joules/Columb
n(Cv)(deltaT)
BA
BLv

6. type of collision where objects stick togerther
no force (right hand rule)
perfectly inelastic collision
pL/A
h/wavelength

7. force a charge in a Bfield
qVB
frequency never changes for light problems
-KA
2Pi * sqrt(l/g)

8. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
inelastic collision
G M/((d/2)^2)
(EMF)Rt/10
M(Lf)

9. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2
roegh
inelastic collision

10. heat during an isometric process
n(Cv)(deltaT)
deltaU = deltaQ + deltaW
(Patm) + (Pgauge)
nSintheta=nsintheta

11. velocity of an electrion as it exitws from the hole
2Pi * sqrt(l/g)
qrB/m
joules/second
Joules/Columb

12. formula for power with current and resistance
(Fn)(mu)
opposite motion
sqrt(T/(m/))
(I^2)R

13. isometric
L -LCostheta
constant volume
KQ/r
((Th) -(Tl))/(Th)

14. formula for impluse involving time
-KA
qVB
J= Ft
h/mv

15. the units of power other than watts
mV -m(Vo)
Ed=V
K |q||Q|/r^2
joules/second

16. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
(I^2)RT
mgCostheta(mu)d
qVB

17. formula for constructive interference in a diffraction grating
.5KA^2
mV -m(Vo)
V = (Vo) + at
dSintheta=mwavelength

18. formula for critical angle
(N2)/(N1)
delta x = (Vo)t + .5at^2
1/4wavelength
Columbs/second

19. formula for charge stored in a capciator
Q=CV
M(Lf)
BLv
elastic collision

20. units for voltage other than volts
KI/r
(I^2)R
Joules/Columb
2nt=mwavelength

21. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
no temp change
qE
.5mV^2 + .5KA^2

22. work energy theorum
net work = delta K
1/4wavelength
-KA
pL/A

23. velocity of waves on a string if tension is known
sqrt(T/(m/))
Columbs/second
qV
FV

24. formula equating energy and mass
no force (right hand rule)
mgCostheta(mu)d
e=mc^2
no heat flow

25. formula relating voltage and electric field
(V^2)/r
(No)(wavelength)=(Nn)(new wavelength)
.5KA^2
Ed=V

26. what direction is friction?
(3/2)nRdeltaT
KI/r
opposite motion
((Th) -(Tl))/(Th)

27. second kinematic
qV
1/2wavelength
Ed=V
delta x = (Vo)t + .5at^2

28. new frequency of light as it enters a new substance
deltaU -deltaW
dSintheta=mwavelength
k|Q|/r^2
frequency never changes for light problems

29. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
nSintheta=nsintheta
E/B
h/wavelength

30. third kinematic
m(v^2)/qvB
(Wnet)/(Qin)
(I^2)RT
V^2=(Vo)^2 +2a*change in x

31. formula for buoyant force
roeVg
delta x = (Vo)t + .5at^2
(3/2)nRdeltaT
Columbs/second

32. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
.5KA^2
Ed=V
.5mV^2 + .5KA^2

33. formula for the wavelength (debroglie wavelength) of a moving particle
V = (Vo) + at
h/mv
constant volume
qE

34. first kinematic
constant volume
no temp change
2nt=mwavelength
V = (Vo) + at

35. the units of current other than amps
(EMF)Rt/10
Columbs/second
1/2wavelength
(I^2)RT

36. change in internal energy during a cyclic process
roeVg
inelastic collision
Joules/Columb
0

37. formula for power with current and voltage
VI
(V^2)/r
nSintheta=nsintheta
d/2

38. formula for centripetal acceleration
roeVg
Joules/Columb
no temp change
(V^2)/r

39. lens/mirror equation
FV
(1/Do) + (1/Di) = (1/f)
(N2)/(N1)
1/2wavelength

40. isobaric
KI/r
constant pressure
1/2wavelength
V = (Vo) + at

41. formula for power with Voltage and resistance
FV
elastic collision
(V^2)/R
inelastic collision

42. heat during a cyclic process (net heat)
deltaU -deltaW
FV
1/4wavelength
no temp change

43. formula for change in internal energy in a cosnstat volume PV process
n(Cv)(deltaT)
G M/((d/2)^2)
FV
(3/2)nRdeltaT

44. force of frction on an incline
mgCostheta(mu)d
net work = delta K
E/B
no force (right hand rule)

45. adibatic
no temp change
1/((1/C)+(1/C)..........)
Ed=V
no heat flow

46. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(V^2)/R
mV -m(Vo)
qV
(N2)/(N1)

47. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
(EMF)Rt/10
Joules/Columb
deltaU -deltaW

48. voltage induced in a rod moving through a uniform magnetic field
1/2wavelength
BLv
qrB/m
e=mc^2

49. formula for energy of a spring mass when spring is at maximum displacement
(I^2)RT
BA
hc/wavelength
.5KA^2

50. type of collision where K is conserved
elastic collision
BLv
(No)(wavelength)=(Nn)(new wavelength)
KQ/r