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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.
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 thin membrane with two phase changes
2nt=mwavelength
m(v^2)/qvB
nSintheta=nsintheta
F/A

2. formula for the wavelength (debroglie wavelength) of a moving particle
h/wavelength
h/mv
no temp change
nSintheta=nsintheta

3. equation of continuity
(EMF)Rt/10
AV=(A2)(V2)
no temp change
L -LCostheta

4. new frequency of light as it enters a new substance
(Fn)(mu)
V^2=(Vo)^2 +2a*change in x
frequency never changes for light problems
qV

5. isothermal
no temp change
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2
frequency never changes for light problems

6. formula for impulse involving momentum
net work = delta K
dSintheta=mwavelength
rF
mV -m(Vo)

7. units for voltage other than volts
perfectly inelastic collision
Joules/Columb
.5CV^2 or .5 Q^2/C or .5QV
qVB

8. first kinematic
(1/Do) + (1/Di) = (1/f)
V = (Vo) + at
pL/A
n(Cv)(deltaT)

9. what direction is friction?
KQ/r
no temp change
opposite motion
.5KA^2

10. lens/mirror equation
((Qin) -(Qout))/(Qin)
Joules/Columb
(1/Do) + (1/Di) = (1/f)
(I^2)R

11. the force on a charge in an electric field
qE
hc/wavelength
Columbs/second
roeVg

12. electric potential a distance r from a charge
J= Ft
KQ/r
1/4wavelength
qE

13. type of collision where objects stick togerther
constant volume
perfectly inelastic collision
constant pressure
rF

14. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
k|Q|/r^2
d/2
frequency never changes for light problems

15. voltage induced in a rod moving through a uniform magnetic field
Q=CV
V = (Vo) + at
hc/wavelength
BLv

16. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
.5KA^2
roegh
constant volume

17. formula for buoyant force
roeVg
e=mc^2
qrB/m
mgCostheta(mu)d

18. formula to find the absoluate pressure at the bottom of a pool
(I^2)R
AV=(A2)(V2)
2Pi * sqrt(l/g)
(Patm) + (Pgauge)

19. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
AV=(A2)(V2)
dSintheta=mwavelength
qV
k|Q|/r^2

20. focal length of a mirror with radius d
((Th) -(Tl))/(Th)
1/4wavelength
d/2
Columbs/second

21. new wavelength of light as it enters a new substance
no force (right hand rule)
sqrt(T/(m/))
qrB/m
(No)(wavelength)=(Nn)(new wavelength)

22. formula for critical angle
h/mv
1/((1/C)+(1/C)..........)
(N2)/(N1)
qVB

23. formula for power with current and resistance
no temp change
(3/2)nRdeltaT
KI/r
(I^2)R

24. velocity of an electrion as it exitws from the hole
(I^2)RT
qrB/m
J= Ft
MC(deltaT)

25. velocity of a molecule of gas
hc/wavelength
0
sqrt(3KT/m)
roeVg

26. formula for power with Voltage and resistance
K |q||Q|/r^2
(V^2)/R
inelastic collision
mgCostheta(mu)d

27. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
J= Ft
no force (right hand rule)
frequency never changes for light problems

28. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(I^2)R
roegh
joules/second
G M/((d/2)^2)

29. formula for finding magnetic flux
deltaU -deltaW
BA
Joules/Columb
n(Cv)(deltaT)

30. velocity of waves on a string if tension is known
sqrt(T/(m/))
Columbs/second
L -LCostheta
constant volume

31. formula for finding the magnetic field a distance r from a current carrying wire
BLv
KI/r
.5CV^2 or .5 Q^2/C or .5QV
h/mv

32. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
h/wavelength
perfectly inelastic collision
n(Cv)(deltaT)

33. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
n(Cv)(deltaT)
Q=CV
constant volume

34. heat required to melt a substance
M(Lf)
net work = delta K
rF
G M/((d/2)^2)

35. formula for charge stored in a capciator
G M/((d/2)^2)
Q=CV
deltaU = deltaQ + deltaW
m(v^2)/qvB

36. forgotten power equation
1/4wavelength
KI/r
FV
deltaU -deltaW

37. magnification equation
(Di)/(Do) or (Hi)/(Ho)
AV=(A2)(V2)
KI/r
constant volume

38. total capacitance of capacitors in series
((Qin) -(Qout))/(Qin)
no heat flow
1/((1/C)+(1/C)..........)
Columbs/second

39. the force on a charge moving parallel to a magnetic field
Q=CV
no force (right hand rule)
((Qin) -(Qout))/(Qin)
deltaU = deltaQ + deltaW

40. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
AV=(A2)(V2)
qrB/m
(V^2)/R
(EMF)Rt/10

41. adibatic
no heat flow
V+IR
(3/2)nRdeltaT
roegh

42. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
BLv
inelastic collision
roegh

43. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
(V^2)/r
Joules/Columb
qV

44. formula for torque
no temp change
delta x = (Vo)t + .5at^2
rF
2Pi * sqrt(l/g)

45. hooke's law force of a spring
sqrt(3KT/m)
mV -m(Vo)
F/A
-KA

46. force of gravity between two objects of mass m
AV=(A2)(V2)
V+IR
GM*M/(r^2)
(V^2)/r

47. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
(1/Do) + (1/Di) = (1/f)
1/4wavelength
(Wnet)/(Qin)

48. force a charge in a Bfield
frequency never changes for light problems
(I^2)R
qVB
(Di)/(Do) or (Hi)/(Ho)

49. formula for Carnot efficiency
Ed=V
K |q||Q|/r^2
mgCostheta(mu)d
((Th) -(Tl))/(Th)

50. EMF of a battery having internal resistance R
V+IR
AV=(A2)(V2)
1/4wavelength
e=mc^2