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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 height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
k|Q|/r^2
BLv
1/((1/C)+(1/C)..........)

2. electric field in a distance r from a charge
h/wavelength
k|Q|/r^2
(Wnet)/(Qin)
Ed=V

3. lens/mirror equation
AV=(A2)(V2)
(1/Do) + (1/Di) = (1/f)
(3/2)nRdeltaT
1/2wavelength

4. formula for constructive interference in a thin membrane with two phase changes
h(Fo)
2nt=mwavelength
roegh
2Pi * sqrt(l/g)

5. formula for buoyant force
roeVg
roegh
dSintheta=mwavelength
1/2wavelength

6. formula for power with Voltage and resistance
roeVg
frequency never changes for light problems
roegh
(V^2)/R

7. force of gravity between two objects of mass m
.5KA^2
MC(deltaT)
GM*M/(r^2)
Ed=V

8. work energy theorum
F/A
(hc/wavelength)=h(Fo) +(Vs)
net work = delta K
inelastic collision

9. the electric force between two objects of charge Q
rF
Ed=V
K |q||Q|/r^2
.5mV^2 + .5KA^2

10. formula for centripetal acceleration
(Di)/(Do) or (Hi)/(Ho)
(V^2)/r
frequency never changes for light problems
((Th) -(Tl))/(Th)

11. formula for efficiency of a heat engine using work out
V^2=(Vo)^2 +2a*change in x
Joules/Columb
qV
(Wnet)/(Qin)

12. natural frequency of an open tube of length L
1/2wavelength
sqrt(3KT/m)
((Qin) -(Qout))/(Qin)
AV=(A2)(V2)

13. formula for constructive interference in a diffraction grating
(I^2)RT
dSintheta=mwavelength
qVB
(hc/wavelength)=h(Fo) +(Vs)

14. formula for finding the magnetic field a distance r from a current carrying wire
(I^2)RT
.5KA^2
KI/r
delta x = (Vo)t + .5at^2

15. pressure
Joules/Columb
k|Q|/r^2
(hc/wavelength)=h(Fo) +(Vs)
F/A

16. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
AV=(A2)(V2)
h(Fo)
hc/wavelength

17. velocity of waves on a string if tension is known
sqrt(T/(m/))
n(Cv)(deltaT)
((Qin) -(Qout))/(Qin)
L -LCostheta

18. EMF of a battery having internal resistance R
BA
inelastic collision
opposite motion
V+IR

19. total capacitance of capacitors in series
V+IR
1/((1/C)+(1/C)..........)
.5mV^2 + .5KA^2
constant volume

20. the force on a charge in an electric field
KQ/r
h(Fo)
qE
d/2

21. magnification equation
h/mv
inelastic collision
1/4wavelength
(Di)/(Do) or (Hi)/(Ho)

22. force of frction on an incline
mgCostheta(mu)d
(I^2)R
K |q||Q|/r^2
opposite motion

23. formula for impulse involving momentum
(I^2)R
d/2
frequency never changes for light problems
mV -m(Vo)

24. energy stored in a capacitor
perfectly inelastic collision
rF
qrB/m
.5CV^2 or .5 Q^2/C or .5QV

25. formula equating energy and mass
L -LCostheta
.5CV^2 or .5 Q^2/C or .5QV
h/wavelength
e=mc^2

26. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
M(Lf)
G M/((d/2)^2)
FV
KQ/r

27. formula relating voltage and electric field
FV
deltaU = deltaQ + deltaW
Ed=V
h(Fo)

28. the units of current other than amps
rF
Columbs/second
V^2=(Vo)^2 +2a*change in x
deltaU = deltaQ + deltaW

29. type of collision where K is not conserved
V+IR
inelastic collision
qV
.5CV^2 or .5 Q^2/C or .5QV

30. heat required to change temperature of a substance
h(Fo)
2Pi * sqrt(l/g)
MC(deltaT)
(Wnet)/(Qin)

31. equation for the first law of thermodynamics
deltaU -deltaW
deltaU = deltaQ + deltaW
n(Cv)(deltaT)
1/((1/C)+(1/C)..........)

32. equation of continuity
perfectly inelastic collision
(I^2)RT
KI/r
AV=(A2)(V2)

33. change in internal energy during a cyclic process
qVB
0
no temp change
constant pressure

34. adibatic
.5CV^2 or .5 Q^2/C or .5QV
no heat flow
k|Q|/r^2
.5mV^2 + .5KA^2

35. formula for finding magnetic flux
BA
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
nSintheta=nsintheta

36. second kinematic
m(v^2)/qvB
roeVg
delta x = (Vo)t + .5at^2
pL/A

37. energy of a photon if wavelength is known
V+IR
hc/wavelength
constant pressure
KI/r

38. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
d/2
E/B
qrB/m
(1/Do) + (1/Di) = (1/f)

39. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
Ed=V
FV
qV
qVB

40. electric potential a distance r from a charge
(1/Do) + (1/Di) = (1/f)
opposite motion
no temp change
KQ/r

41. new frequency of light as it enters a new substance
.5KA^2
M(Lf)
no temp change
frequency never changes for light problems

42. formula for change in internal energy in a cosnstat volume PV process
G M/((d/2)^2)
m(v^2)/qvB
rF
(3/2)nRdeltaT

43. formula for charge stored in a capciator
qVB
V = (Vo) + at
E/B
Q=CV

44. formula for impluse involving time
rF
h(Fo)
J= Ft
h/wavelength

45. units for voltage other than volts
Joules/Columb
qrB/m
h/wavelength
qVB

46. formula for finding the momentum of a photon
h/wavelength
h(Fo)
e=mc^2
(V^2)/r

47. new wavelength of light as it enters a new substance
(Fn)(mu)
M(Lf)
(No)(wavelength)=(Nn)(new wavelength)
GM*M/(r^2)

48. voltage induced in a rod moving through a uniform magnetic field
M(Lf)
1/2wavelength
BLv
no heat flow

49. formula to find the gauge pressure at the bottom of a pool
(No)(wavelength)=(Nn)(new wavelength)
roegh
AV=(A2)(V2)
hc/wavelength

50. isobaric
L -LCostheta
roegh
(1/Do) + (1/Di) = (1/f)
constant pressure