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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. magnification equation
(1/Do) + (1/Di) = (1/f)
(Di)/(Do) or (Hi)/(Ho)
.5KA^2
roegh

2. first kinematic
V^2=(Vo)^2 +2a*change in x
V = (Vo) + at
-KA
roegh

3. formula for Carnot efficiency
hc/wavelength
perfectly inelastic collision
((Th) -(Tl))/(Th)
d/2

4. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
VI
(No)(wavelength)=(Nn)(new wavelength)
V^2=(Vo)^2 +2a*change in x

5. electric potential a distance r from a charge
(1/Do) + (1/Di) = (1/f)
perfectly inelastic collision
inelastic collision
KQ/r

6. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
V = (Vo) + at
h/mv
no force (right hand rule)

7. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
(hc/wavelength)=h(Fo) +(Vs)
Ed=V
opposite motion

8. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
no temp change
(Di)/(Do) or (Hi)/(Ho)
elastic collision

9. voltage induced in a rod moving through a uniform magnetic field
VI
qV
BLv
(Fn)(mu)

10. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
VI
k|Q|/r^2
perfectly inelastic collision

11. EMF of a battery having internal resistance R
qV
V+IR
FV
V = (Vo) + at

12. resistance of a wire
pL/A
mgCostheta(mu)d
GM*M/(r^2)
qVB

13. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
joules/second
qV
V^2=(Vo)^2 +2a*change in x
(Di)/(Do) or (Hi)/(Ho)

14. the electric force between two objects of charge Q
(I^2)RT
n(Cv)(deltaT)
(Fn)(mu)
K |q||Q|/r^2

15. equation of continuity
no force (right hand rule)
joules/second
AV=(A2)(V2)
VI

16. hooke's law force of a spring
F/A
KI/r
-KA
(V^2)/R

17. 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
no heat flow
h/wavelength
n(Cv)(deltaT)

18. formula for constructive interference in a thin membrane with two phase changes
k|Q|/r^2
n(Cv)(deltaT)
2nt=mwavelength
(N2)/(N1)

19. heat during a cyclic process (net heat)
(I^2)RT
opposite motion
deltaU -deltaW
(N2)/(N1)

20. isobaric
2nt=mwavelength
G M/((d/2)^2)
1/2wavelength
constant pressure

21. formula relating voltage and electric field
Ed=V
.5mV^2 + .5KA^2
no temp change
no force (right hand rule)

22. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
Columbs/second
constant pressure
elastic collision

23. change in internal energy during a cyclic process
2nt=mwavelength
(Wnet)/(Qin)
0
MC(deltaT)

24. velocity of an electrion as it exitws from the hole
qrB/m
BLv
qVB
h/mv

25. formula for finding the momentum of a photon
h/wavelength
MC(deltaT)
qVB
constant pressure

26. formula for power with current and voltage
m(v^2)/qvB
(No)(wavelength)=(Nn)(new wavelength)
VI
1/4wavelength

27. force a charge in a Bfield
M(Lf)
(Wnet)/(Qin)
K |q||Q|/r^2
qVB

28. heat during an isometric process
sqrt(T/(m/))
-KA
n(Cv)(deltaT)
.5KA^2

29. formula for critical angle
2Pi * sqrt(l/g)
sqrt(T/(m/))
(1/Do) + (1/Di) = (1/f)
(N2)/(N1)

30. formula for centripetal acceleration
(EMF)Rt/10
constant pressure
inelastic collision
(V^2)/r

31. radius of curvature of a charged particle as it enters a uniform magnetic field
k|Q|/r^2
J= Ft
qV
m(v^2)/qvB

32. velocity of waves on a string if tension is known
sqrt(T/(m/))
.5mV^2 + .5KA^2
inelastic collision
qrB/m

33. formula for constructive interference in a diffraction grating
k|Q|/r^2
dSintheta=mwavelength
M(Lf)
(I^2)R

34. snells law
nSintheta=nsintheta
deltaU -deltaW
net work = delta K
VI

35. formula for finding the magnetic field a distance r from a current carrying wire
h(Fo)
KI/r
constant volume
VI

36. new frequency of light as it enters a new substance
frequency never changes for light problems
no force (right hand rule)
BA
1/((1/C)+(1/C)..........)

37. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
(Di)/(Do) or (Hi)/(Ho)
1/((1/C)+(1/C)..........)
h(Fo)

38. formula equating energy and mass
1/4wavelength
e=mc^2
VI
BA

39. 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
(3/2)nRdeltaT
1/2wavelength
sqrt(3KT/m)

40. force of friction
(Wnet)/(Qin)
(Fn)(mu)
FV
Joules/Columb

41. formula for change in internal energy in a cosnstat volume PV process
deltaU = deltaQ + deltaW
opposite motion
(3/2)nRdeltaT
dSintheta=mwavelength

42. formula for torque
rF
KI/r
VI
mgCostheta(mu)d

43. formula for charge stored in a capciator
KI/r
((Th) -(Tl))/(Th)
hc/wavelength
Q=CV

44. isothermal
no temp change
d/2
V^2=(Vo)^2 +2a*change in x
V+IR

45. heat required to melt a substance
(EMF)Rt/10
M(Lf)
qVB
qrB/m

46. focal length of a mirror with radius d
qrB/m
d/2
deltaU -deltaW
V+IR

47. formula for buoyant force
roeVg
qrB/m
(Di)/(Do) or (Hi)/(Ho)
no temp change

48. isometric
m(v^2)/qvB
constant volume
(Wnet)/(Qin)
.5mV^2 + .5KA^2

49. natural frequency of a closed tube of length L
1/4wavelength
Joules/Columb
1/2wavelength
qrB/m

50. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
MC(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
qE
m(v^2)/qvB