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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 for power with Voltage and resistance
(I^2)R
(V^2)/R
(Fn)(mu)
constant pressure

2. what direction is friction?
opposite motion
F/A
KI/r
Ed=V

3. work energy theorum
no heat flow
net work = delta K
deltaU -deltaW
(hc/wavelength)=h(Fo) +(Vs)

4. third kinematic
-KA
V^2=(Vo)^2 +2a*change in x
(Fn)(mu)
(N2)/(N1)

5. total capacitance of capacitors in series
perfectly inelastic collision
(No)(wavelength)=(Nn)(new wavelength)
1/((1/C)+(1/C)..........)
J= Ft

6. force of gravity between two objects of mass m
roeVg
qVB
pL/A
GM*M/(r^2)

7. formula for charge stored in a capciator
Q=CV
n(Cv)(deltaT)
opposite motion
rF

8. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
Columbs/second
net work = delta K
L -LCostheta

9. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(Di)/(Do) or (Hi)/(Ho)
roeVg
.5mV^2 + .5KA^2
1/4wavelength

10. EMF of a battery having internal resistance R
V+IR
2nt=mwavelength
(N2)/(N1)
sqrt(3KT/m)

11. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
h/wavelength
BLv
E/B
Q=CV

12. voltage induced in a rod moving through a uniform magnetic field
K |q||Q|/r^2
BLv
joules/second
roeVg

13. velocity of a molecule of gas
e=mc^2
mgCostheta(mu)d
(I^2)R
sqrt(3KT/m)

14. velocity of waves on a string if tension is known
E/B
KQ/r
sqrt(T/(m/))
constant pressure

15. the electric force between two objects of charge Q
dSintheta=mwavelength
roegh
joules/second
K |q||Q|/r^2

16. first kinematic
.5CV^2 or .5 Q^2/C or .5QV
V = (Vo) + at
constant volume
sqrt(3KT/m)

17. formula for critical angle
(N2)/(N1)
roegh
net work = delta K
Ed=V

18. formula equating energy and mass
AV=(A2)(V2)
0
(Fn)(mu)
e=mc^2

19. formula for power with current and voltage
VI
(1/Do) + (1/Di) = (1/f)
delta x = (Vo)t + .5at^2
F/A

20. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
(I^2)R
(I^2)RT
E/B

21. forgotten power equation
J= Ft
0
FV
V = (Vo) + at

22. magnification equation
BA
(Fn)(mu)
BLv
(Di)/(Do) or (Hi)/(Ho)

23. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb
(hc/wavelength)=h(Fo) +(Vs)
(Fn)(mu)

24. formula for constructive interference in a thin membrane with two phase changes
GM*M/(r^2)
1/4wavelength
2nt=mwavelength
mgCostheta(mu)d

25. formula for finding magnetic flux
qE
BLv
BA
joules/second

26. energy stored in a capacitor
.5KA^2
.5CV^2 or .5 Q^2/C or .5QV
perfectly inelastic collision
.5mV^2 + .5KA^2

27. formula for efficiency of a heat engine using work out
0
BA
(Wnet)/(Qin)
constant volume

28. electric potential a distance r from a charge
BA
m(v^2)/qvB
net work = delta K
KQ/r

29. force of frction on an incline
J= Ft
roeVg
mgCostheta(mu)d
Joules/Columb

30. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
L -LCostheta
.5CV^2 or .5 Q^2/C or .5QV
(EMF)Rt/10
d/2

31. heat during a cyclic process (net heat)
(Fn)(mu)
1/((1/C)+(1/C)..........)
Ed=V
deltaU -deltaW

32. formula for buoyant force
BLv
MC(deltaT)
Ed=V
roeVg

33. force a charge in a Bfield
deltaU = deltaQ + deltaW
qVB
L -LCostheta
(N2)/(N1)

34. type of collision where K is not conserved
no heat flow
(1/Do) + (1/Di) = (1/f)
inelastic collision
(I^2)RT

35. formula for torque
no heat flow
G M/((d/2)^2)
rF
deltaU = deltaQ + deltaW

36. the force on a charge in an electric field
nSintheta=nsintheta
M(Lf)
BLv
qE

37. change in internal energy during a cyclic process
0
k|Q|/r^2
((Qin) -(Qout))/(Qin)
(3/2)nRdeltaT

38. electric field in a distance r from a charge
roeVg
qVB
k|Q|/r^2
Q=CV

39. equation of continuity
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV
(V^2)/r
AV=(A2)(V2)

40. type of collision where K is conserved
elastic collision
E/B
FV
0

41. formula for the wavelength (debroglie wavelength) of a moving particle
F/A
Ed=V
AV=(A2)(V2)
h/mv

42. formula for energy of a spring mass when spring is at maximum displacement
M(Lf)
(V^2)/r
.5KA^2
e=mc^2

43. formula to find the gauge pressure at the bottom of a pool
Ed=V
KQ/r
hc/wavelength
roegh

44. heat during an isometric process
h(Fo)
n(Cv)(deltaT)
Ed=V
(V^2)/R

45. units for voltage other than volts
-KA
no temp change
Joules/Columb
(Wnet)/(Qin)

46. formula for efficiency not using work out
Joules/Columb
((Qin) -(Qout))/(Qin)
(Di)/(Do) or (Hi)/(Ho)
qrB/m

47. formula for impluse involving time
Ed=V
J= Ft
KQ/r
K |q||Q|/r^2

48. formula for finding the momentum of a photon
roeVg
h/wavelength
(hc/wavelength)=h(Fo) +(Vs)
perfectly inelastic collision

49. new frequency of light as it enters a new substance
constant pressure
((Qin) -(Qout))/(Qin)
K |q||Q|/r^2
frequency never changes for light problems

50. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2
2nt=mwavelength