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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. new wavelength of light as it enters a new substance
(Fn)(mu)
roeVg
(No)(wavelength)=(Nn)(new wavelength)
(Di)/(Do) or (Hi)/(Ho)

2. change in internal energy during a cyclic process
(V^2)/R
(EMF)Rt/10
h/wavelength
0

3. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
hc/wavelength
deltaU = deltaQ + deltaW
(I^2)R
(hc/wavelength)=h(Fo) +(Vs)

4. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
.5mV^2 + .5KA^2
.5KA^2
roeVg

5. formula for centripetal acceleration
Joules/Columb
(V^2)/r
no temp change
(I^2)RT

6. lens/mirror equation
m(v^2)/qvB
qE
(1/Do) + (1/Di) = (1/f)
VI

7. formula for efficiency not using work out
KQ/r
m(v^2)/qvB
((Qin) -(Qout))/(Qin)
nSintheta=nsintheta

8. natural frequency of a closed tube of length L
1/4wavelength
m(v^2)/qvB
n(Cv)(deltaT)
(1/Do) + (1/Di) = (1/f)

9. isothermal
.5KA^2
.5mV^2 + .5KA^2
no temp change
(Wnet)/(Qin)

10. the force on a charge in an electric field
constant pressure
qE
AV=(A2)(V2)
1/((1/C)+(1/C)..........)

11. radius of curvature of a charged particle as it enters a uniform magnetic field
-KA
FV
2Pi * sqrt(l/g)
m(v^2)/qvB

12. hooke's law force of a spring
-KA
GM*M/(r^2)
e=mc^2
1/2wavelength

13. snells law
.5CV^2 or .5 Q^2/C or .5QV
no temp change
nSintheta=nsintheta
AV=(A2)(V2)

14. first kinematic
V = (Vo) + at
constant volume
(I^2)RT
Joules/Columb

15. resistance of a wire
((Th) -(Tl))/(Th)
perfectly inelastic collision
.5CV^2 or .5 Q^2/C or .5QV
pL/A

16. formula for charge stored in a capciator
Q=CV
(hc/wavelength)=h(Fo) +(Vs)
AV=(A2)(V2)
m(v^2)/qvB

17. formula for change in internal energy in a cosnstat volume PV process
rF
GM*M/(r^2)
constant pressure
(3/2)nRdeltaT

18. voltage induced in a rod moving through a uniform magnetic field
frequency never changes for light problems
BLv
h(Fo)
e=mc^2

19. electric potential a distance r from a charge
VI
KQ/r
k|Q|/r^2
.5mV^2 + .5KA^2

20. focal length of a mirror with radius d
net work = delta K
rF
no force (right hand rule)
d/2

21. formula to find the absoluate pressure at the bottom of a pool
net work = delta K
qE
(Wnet)/(Qin)
(Patm) + (Pgauge)

22. formula for efficiency of a heat engine using work out
(hc/wavelength)=h(Fo) +(Vs)
L -LCostheta
E/B
(Wnet)/(Qin)

23. magnification equation
E/B
no heat flow
(Di)/(Do) or (Hi)/(Ho)
(hc/wavelength)=h(Fo) +(Vs)

24. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
1/4wavelength
roeVg
G M/((d/2)^2)

25. adibatic
AV=(A2)(V2)
roeVg
no heat flow
mV -m(Vo)

26. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(Di)/(Do) or (Hi)/(Ho)
qV
no temp change
G M/((d/2)^2)

27. the electric force between two objects of charge Q
K |q||Q|/r^2
qV
(Patm) + (Pgauge)
.5KA^2

28. energy of a photon if wavelength is known
hc/wavelength
(3/2)nRdeltaT
deltaU = deltaQ + deltaW
qE

29. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
nSintheta=nsintheta
(Di)/(Do) or (Hi)/(Ho)
e=mc^2
.5mV^2 + .5KA^2

30. third kinematic
V^2=(Vo)^2 +2a*change in x
(3/2)nRdeltaT
L -LCostheta
F/A

31. new frequency of light as it enters a new substance
frequency never changes for light problems
MC(deltaT)
roeVg
(Fn)(mu)

32. the units of current other than amps
elastic collision
Columbs/second
(Di)/(Do) or (Hi)/(Ho)
perfectly inelastic collision

33. the force on a charge moving parallel to a magnetic field
2nt=mwavelength
F/A
h/wavelength
no force (right hand rule)

34. electric field in a distance r from a charge
no heat flow
sqrt(3KT/m)
V = (Vo) + at
k|Q|/r^2

35. heat during a cyclic process (net heat)
deltaU -deltaW
.5CV^2 or .5 Q^2/C or .5QV
KQ/r
delta x = (Vo)t + .5at^2

36. velocity of a molecule of gas
1/2wavelength
(hc/wavelength)=h(Fo) +(Vs)
sqrt(3KT/m)
.5KA^2

37. formula for the wavelength (debroglie wavelength) of a moving particle
1/4wavelength
h/mv
roegh
opposite motion

38. isobaric
G M/((d/2)^2)
h/mv
Q=CV
constant pressure

39. isometric
G M/((d/2)^2)
constant volume
((Th) -(Tl))/(Th)
h(Fo)

40. heat required to melt a substance
mgCostheta(mu)d
m(v^2)/qvB
Columbs/second
M(Lf)

41. the units of power other than watts
deltaU = deltaQ + deltaW
J= Ft
(V^2)/r
joules/second

42. formula relating voltage and electric field
0
FV
KQ/r
Ed=V

43. force of friction
opposite motion
(Fn)(mu)
GM*M/(r^2)
hc/wavelength

44. formula for constructive interference in a thin membrane with two phase changes
net work = delta K
2nt=mwavelength
elastic collision
E/B

45. formula to find the gauge pressure at the bottom of a pool
roegh
G M/((d/2)^2)
M(Lf)
deltaU = deltaQ + deltaW

46. force of gravity between two objects of mass m
GM*M/(r^2)
h(Fo)
net work = delta K
V+IR

47. natural frequency of an open tube of length L
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
(Patm) + (Pgauge)
1/2wavelength

48. type of collision where K is not conserved
(Di)/(Do) or (Hi)/(Ho)
inelastic collision
no force (right hand rule)
constant volume

49. formula for power with current and resistance
(I^2)R
.5KA^2
Q=CV
.5mV^2 + .5KA^2

50. forgotten power equation
nSintheta=nsintheta
net work = delta K
2nt=mwavelength
FV