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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. pressure
(Wnet)/(Qin)
constant pressure
F/A
qVB

2. formula for the wavelength (debroglie wavelength) of a moving particle
(Di)/(Do) or (Hi)/(Ho)
h/mv
(N2)/(N1)
elastic collision

3. formula for finding magnetic flux
BA
G M/((d/2)^2)
KQ/r
Q=CV

4. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
Q=CV
(hc/wavelength)=h(Fo) +(Vs)
n(Cv)(deltaT)
(Wnet)/(Qin)

5. work energy theorum
FV
1/((1/C)+(1/C)..........)
net work = delta K
h(Fo)

6. formula for finding the work function of a metal if the cutoff frequency is known
Q=CV
h(Fo)
KQ/r
J= Ft

7. electric potential a distance r from a charge
(EMF)Rt/10
KQ/r
constant pressure
K |q||Q|/r^2

8. formula for power with current and voltage
perfectly inelastic collision
VI
e=mc^2
M(Lf)

9. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
Columbs/second
dSintheta=mwavelength
no temp change
qV

10. type of collision where K is conserved
2nt=mwavelength
V = (Vo) + at
elastic collision
(Patm) + (Pgauge)

11. heat during a cyclic process (net heat)
e=mc^2
deltaU -deltaW
Ed=V
Joules/Columb

12. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
hc/wavelength
1/((1/C)+(1/C)..........)
net work = delta K

13. the units of current other than amps
J= Ft
Joules/Columb
no force (right hand rule)
Columbs/second

14. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2
FV
(I^2)RT

15. formula for period of a pendulum
2Pi * sqrt(l/g)
1/4wavelength
rF
h(Fo)

16. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
qV
MC(deltaT)
perfectly inelastic collision

17. force of gravity between two objects of mass m
(N2)/(N1)
delta x = (Vo)t + .5at^2
Q=CV
GM*M/(r^2)

18. formula for critical angle
roegh
sqrt(T/(m/))
(N2)/(N1)
(Di)/(Do) or (Hi)/(Ho)

19. magnification equation
(I^2)R
(Di)/(Do) or (Hi)/(Ho)
Joules/Columb
(Patm) + (Pgauge)

20. third kinematic
Columbs/second
qV
0
V^2=(Vo)^2 +2a*change in x

21. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
L -LCostheta
opposite motion
1/4wavelength

22. force a charge in a Bfield
qVB
roegh
Joules/Columb
K |q||Q|/r^2

23. type of collision where objects stick togerther
d/2
perfectly inelastic collision
h/wavelength
frequency never changes for light problems

24. focal length of a mirror with radius d
hc/wavelength
d/2
rF
qE

25. heat required to change temperature of a substance
MC(deltaT)
roegh
joules/second
V^2=(Vo)^2 +2a*change in x

26. the force on a charge moving parallel to a magnetic field
(No)(wavelength)=(Nn)(new wavelength)
2Pi * sqrt(l/g)
qVB
no force (right hand rule)

27. formula for impluse involving time
J= Ft
K |q||Q|/r^2
dSintheta=mwavelength
-KA

28. formula for constructive interference in a diffraction grating
no force (right hand rule)
dSintheta=mwavelength
1/4wavelength
V^2=(Vo)^2 +2a*change in x

29. force of friction
AV=(A2)(V2)
(Fn)(mu)
qrB/m
1/4wavelength

30. the electric force between two objects of charge Q
(I^2)R
K |q||Q|/r^2
2Pi * sqrt(l/g)
n(Cv)(deltaT)

31. radius of curvature of a charged particle as it enters a uniform magnetic field
FV
(I^2)RT
m(v^2)/qvB
(I^2)R

32. type of collision where K is not conserved
V+IR
((Th) -(Tl))/(Th)
(No)(wavelength)=(Nn)(new wavelength)
inelastic collision

33. new wavelength of light as it enters a new substance
(Patm) + (Pgauge)
opposite motion
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb

34. formula relating voltage and electric field
2Pi * sqrt(l/g)
Ed=V
qrB/m
pL/A

35. velocity of a molecule of gas
opposite motion
sqrt(3KT/m)
roeVg
1/((1/C)+(1/C)..........)

36. formula for power with current and resistance
(I^2)R
AV=(A2)(V2)
G M/((d/2)^2)
rF

37. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
qE
k|Q|/r^2
nSintheta=nsintheta

38. lens/mirror equation
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
qVB
2Pi * sqrt(l/g)

39. formula for constructive interference in a thin membrane with two phase changes
0
k|Q|/r^2
F/A
2nt=mwavelength

40. formula for power with Voltage and resistance
Columbs/second
(V^2)/R
(Fn)(mu)
joules/second

41. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
VI
mV -m(Vo)
roegh

42. new frequency of light as it enters a new substance
2nt=mwavelength
Columbs/second
constant pressure
frequency never changes for light problems

43. formula for finding the momentum of a photon
Q=CV
sqrt(3KT/m)
h/wavelength
V+IR

44. formula equating energy and mass
h/mv
VI
MC(deltaT)
e=mc^2

45. equation of continuity
qE
KI/r
G M/((d/2)^2)
AV=(A2)(V2)

46. units for voltage other than volts
no force (right hand rule)
Joules/Columb
opposite motion
d/2

47. snells law
(No)(wavelength)=(Nn)(new wavelength)
(Wnet)/(Qin)
nSintheta=nsintheta
K |q||Q|/r^2

48. force of frction on an incline
qV
FV
mgCostheta(mu)d
2Pi * sqrt(l/g)

49. formula for height of the block (at the start of a pendulum string) in terms of theta and L
mgCostheta(mu)d
L -LCostheta
mV -m(Vo)
inelastic collision

50. hooke's law force of a spring
-KA
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)
KI/r