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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. the units of current other than amps
VI
Q=CV
Columbs/second
pL/A

2. velocity of a molecule of gas
h/mv
sqrt(3KT/m)
d/2
KI/r

3. resistance of a wire
E/B
pL/A
AV=(A2)(V2)
(I^2)RT

4. formula for torque
Columbs/second
e=mc^2
1/((1/C)+(1/C)..........)
rF

5. formula for impluse involving time
(I^2)R
V+IR
J= Ft
sqrt(T/(m/))

6. formula for centripetal acceleration
KI/r
(V^2)/r
1/2wavelength
(3/2)nRdeltaT

7. equation of continuity
h/wavelength
0
e=mc^2
AV=(A2)(V2)

8. 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
deltaU -deltaW
roeVg
(Patm) + (Pgauge)

9. third kinematic
V^2=(Vo)^2 +2a*change in x
inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
qV

10. formula equating energy and mass
opposite motion
e=mc^2
d/2
(N2)/(N1)

11. formula for buoyant force
d/2
2nt=mwavelength
roeVg
.5mV^2 + .5KA^2

12. forgotten power equation
-KA
FV
((Th) -(Tl))/(Th)
h(Fo)

13. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
n(Cv)(deltaT)
KI/r
AV=(A2)(V2)
(hc/wavelength)=h(Fo) +(Vs)

14. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
elastic collision
dSintheta=mwavelength
MC(deltaT)

15. electric field in a distance r from a charge
L -LCostheta
2nt=mwavelength
V^2=(Vo)^2 +2a*change in x
k|Q|/r^2

16. formula for finding the work function of a metal if the cutoff frequency is known
(Di)/(Do) or (Hi)/(Ho)
h(Fo)
1/2wavelength
((Th) -(Tl))/(Th)

17. formula for finding magnetic flux
AV=(A2)(V2)
sqrt(3KT/m)
BA
V+IR

18. formula for power with current and resistance
E/B
(I^2)R
1/2wavelength
2Pi * sqrt(l/g)

19. energy of a photon if wavelength is known
.5KA^2
hc/wavelength
opposite motion
mgCostheta(mu)d

20. formula for constructive interference in a diffraction grating
(Wnet)/(Qin)
((Th) -(Tl))/(Th)
deltaU = deltaQ + deltaW
dSintheta=mwavelength

21. EMF of a battery having internal resistance R
V+IR
nSintheta=nsintheta
BLv
delta x = (Vo)t + .5at^2

22. focal length of a mirror with radius d
BLv
L -LCostheta
d/2
.5KA^2

23. type of collision where objects stick togerther
constant pressure
perfectly inelastic collision
FV
sqrt(3KT/m)

24. the electric force between two objects of charge Q
K |q||Q|/r^2
(N2)/(N1)
(EMF)Rt/10
constant volume

25. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
(EMF)Rt/10
(Wnet)/(Qin)
rF

26. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
.5mV^2 + .5KA^2
G M/((d/2)^2)
elastic collision
2Pi * sqrt(l/g)

27. formula for efficiency of a heat engine using work out
.5KA^2
(Wnet)/(Qin)
m(v^2)/qvB
J= Ft

28. formula for power with current and voltage
FV
VI
2nt=mwavelength
(V^2)/r

29. adibatic
m(v^2)/qvB
no heat flow
h/wavelength
roeVg

30. 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
net work = delta K
2Pi * sqrt(l/g)
qVB

31. formula for finding the momentum of a photon
FV
elastic collision
roegh
h/wavelength

32. new frequency of light as it enters a new substance
k|Q|/r^2
hc/wavelength
frequency never changes for light problems
h/wavelength

33. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(V^2)/R
mgCostheta(mu)d
qV
.5mV^2 + .5KA^2

34. energy stored in a capacitor
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
k|Q|/r^2
frequency never changes for light problems

35. force of friction
(Fn)(mu)
VI
mgCostheta(mu)d
(V^2)/r

36. formula to find the gauge pressure at the bottom of a pool
d/2
roegh
(hc/wavelength)=h(Fo) +(Vs)
pL/A

37. isobaric
d/2
GM*M/(r^2)
roeVg
constant pressure

38. magnification equation
(Di)/(Do) or (Hi)/(Ho)
(Fn)(mu)
no temp change
nSintheta=nsintheta

39. heat during a cyclic process (net heat)
h/mv
h/wavelength
deltaU -deltaW
no force (right hand rule)

40. formula relating voltage and electric field
Ed=V
n(Cv)(deltaT)
2nt=mwavelength
((Qin) -(Qout))/(Qin)

41. formula for change in internal energy in a cosnstat volume PV process
(EMF)Rt/10
(hc/wavelength)=h(Fo) +(Vs)
(I^2)RT
(3/2)nRdeltaT

42. snells law
F/A
GM*M/(r^2)
(V^2)/R
nSintheta=nsintheta

43. the force on a charge in an electric field
rF
M(Lf)
Joules/Columb
qE

44. pressure
Ed=V
F/A
(V^2)/r
d/2

45. force of frction on an incline
constant volume
((Th) -(Tl))/(Th)
1/2wavelength
mgCostheta(mu)d

46. type of collision where K is not conserved
V = (Vo) + at
inelastic collision
h/wavelength
Joules/Columb

47. the units of power other than watts
joules/second
(Wnet)/(Qin)
dSintheta=mwavelength
2nt=mwavelength

48. formula for charge stored in a capciator
(3/2)nRdeltaT
dSintheta=mwavelength
Q=CV
Joules/Columb

49. formula for Carnot efficiency
(EMF)Rt/10
((Th) -(Tl))/(Th)
h/mv
pL/A

50. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(1/Do) + (1/Di) = (1/f)
(I^2)R
d/2
E/B