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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 equating energy and mass
Columbs/second
e=mc^2
(I^2)RT
(No)(wavelength)=(Nn)(new wavelength)

2. electric field in a distance r from a charge
(Wnet)/(Qin)
(3/2)nRdeltaT
rF
k|Q|/r^2

3. energy of a photon if wavelength is known
hc/wavelength
E/B
roeVg
n(Cv)(deltaT)

4. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
BLv
G M/((d/2)^2)
(No)(wavelength)=(Nn)(new wavelength)
sqrt(T/(m/))

5. type of collision where K is not conserved
G M/((d/2)^2)
1/((1/C)+(1/C)..........)
(1/Do) + (1/Di) = (1/f)
inelastic collision

6. equation of continuity
sqrt(3KT/m)
roeVg
AV=(A2)(V2)
KQ/r

7. what direction is friction?
(EMF)Rt/10
Ed=V
opposite motion
dSintheta=mwavelength

8. the force on a charge moving parallel to a magnetic field
0
GM*M/(r^2)
net work = delta K
no force (right hand rule)

9. radius of curvature of a charged particle as it enters a uniform magnetic field
deltaU = deltaQ + deltaW
inelastic collision
m(v^2)/qvB
(Di)/(Do) or (Hi)/(Ho)

10. voltage induced in a rod moving through a uniform magnetic field
BLv
V = (Vo) + at
opposite motion
qVB

11. lens/mirror equation
k|Q|/r^2
(1/Do) + (1/Di) = (1/f)
mgCostheta(mu)d
roeVg

12. formula for critical angle
(N2)/(N1)
0
(Di)/(Do) or (Hi)/(Ho)
(V^2)/R

13. adibatic
F/A
qVB
no heat flow
deltaU -deltaW

14. equation for the first law of thermodynamics
V = (Vo) + at
h/mv
V+IR
deltaU = deltaQ + deltaW

15. the electric force between two objects of charge Q
K |q||Q|/r^2
2Pi * sqrt(l/g)
h(Fo)
.5mV^2 + .5KA^2

16. formula for change in internal energy in a cosnstat volume PV process
rF
.5KA^2
Columbs/second
(3/2)nRdeltaT

17. formula relating voltage and electric field
(Patm) + (Pgauge)
Ed=V
qVB
G M/((d/2)^2)

18. force of frction on an incline
Columbs/second
deltaU = deltaQ + deltaW
h/wavelength
mgCostheta(mu)d

19. formula for finding the momentum of a photon
1/4wavelength
h/wavelength
deltaU -deltaW
VI

20. second kinematic
joules/second
roegh
e=mc^2
delta x = (Vo)t + .5at^2

21. force of gravity between two objects of mass m
E/B
frequency never changes for light problems
Ed=V
GM*M/(r^2)

22. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
(hc/wavelength)=h(Fo) +(Vs)
AV=(A2)(V2)
h/mv

23. formula for impulse involving momentum
sqrt(3KT/m)
G M/((d/2)^2)
VI
mV -m(Vo)

24. work energy theorum
no temp change
pL/A
net work = delta K
1/2wavelength

25. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
GM*M/(r^2)
qV
no temp change
(hc/wavelength)=h(Fo) +(Vs)

26. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
pL/A
d/2
(Wnet)/(Qin)

27. formula for efficiency not using work out
delta x = (Vo)t + .5at^2
((Qin) -(Qout))/(Qin)
m(v^2)/qvB
1/4wavelength

28. natural frequency of a closed tube of length L
h/mv
qrB/m
nSintheta=nsintheta
1/4wavelength

29. isothermal
V = (Vo) + at
(hc/wavelength)=h(Fo) +(Vs)
delta x = (Vo)t + .5at^2
no temp change

30. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
constant pressure
qVB
qrB/m
qV

31. hooke's law force of a spring
sqrt(3KT/m)
delta x = (Vo)t + .5at^2
KQ/r
-KA

32. change in internal energy during a cyclic process
E/B
(1/Do) + (1/Di) = (1/f)
h/wavelength
0

33. natural frequency of an open tube of length L
KQ/r
dSintheta=mwavelength
((Qin) -(Qout))/(Qin)
1/2wavelength

34. EMF of a battery having internal resistance R
net work = delta K
(I^2)R
V+IR
1/2wavelength

35. velocity of a molecule of gas
((Qin) -(Qout))/(Qin)
inelastic collision
sqrt(3KT/m)
(Fn)(mu)

36. formula for constructive interference in a thin membrane with two phase changes
Joules/Columb
(hc/wavelength)=h(Fo) +(Vs)
2nt=mwavelength
-KA

37. the units of current other than amps
Columbs/second
dSintheta=mwavelength
(V^2)/r
BA

38. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb
(1/Do) + (1/Di) = (1/f)
constant pressure

39. velocity of waves on a string if tension is known
rF
sqrt(T/(m/))
.5KA^2
KQ/r

40. type of collision where K is conserved
KQ/r
(hc/wavelength)=h(Fo) +(Vs)
GM*M/(r^2)
elastic collision

41. formula for impluse involving time
.5CV^2 or .5 Q^2/C or .5QV
GM*M/(r^2)
J= Ft
((Qin) -(Qout))/(Qin)

42. focal length of a mirror with radius d
(V^2)/r
d/2
k|Q|/r^2
Ed=V

43. energy stored in a capacitor
BA
no temp change
.5CV^2 or .5 Q^2/C or .5QV
GM*M/(r^2)

44. formula for the wavelength (debroglie wavelength) of a moving particle
(V^2)/R
h/mv
((Th) -(Tl))/(Th)
qV

45. resistance of a wire
pL/A
perfectly inelastic collision
constant pressure
frequency never changes for light problems

46. heat during an isometric process
2nt=mwavelength
pL/A
qrB/m
n(Cv)(deltaT)

47. isobaric
mV -m(Vo)
constant pressure
V^2=(Vo)^2 +2a*change in x
(N2)/(N1)

48. 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
.5KA^2
(N2)/(N1)
deltaU = deltaQ + deltaW

49. formula for finding the work function of a metal if the cutoff frequency is known
(3/2)nRdeltaT
(EMF)Rt/10
Q=CV
h(Fo)

50. the units of power other than watts
(1/Do) + (1/Di) = (1/f)
frequency never changes for light problems
inelastic collision
joules/second