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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. adibatic
BA
constant volume
no heat flow
V^2=(Vo)^2 +2a*change in x

2. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
Ed=V
V+IR
GM*M/(r^2)

3. formula for power with Voltage and resistance
K |q||Q|/r^2
inelastic collision
(V^2)/R
mV -m(Vo)

4. change in internal energy during a cyclic process
(Patm) + (Pgauge)
0
m(v^2)/qvB
k|Q|/r^2

5. formula for change in internal energy in a cosnstat volume PV process
inelastic collision
1/4wavelength
(3/2)nRdeltaT
e=mc^2

6. focal length of a mirror with radius d
d/2
qVB
nSintheta=nsintheta
0

7. third kinematic
FV
(Fn)(mu)
V^2=(Vo)^2 +2a*change in x
(Di)/(Do) or (Hi)/(Ho)

8. electric potential a distance r from a charge
KQ/r
.5mV^2 + .5KA^2
1/4wavelength
F/A

9. formula equating energy and mass
0
J= Ft
e=mc^2
(Di)/(Do) or (Hi)/(Ho)

10. electric field in a distance r from a charge
Q=CV
delta x = (Vo)t + .5at^2
no temp change
k|Q|/r^2

11. formula for finding the work function of a metal if the cutoff frequency is known
qVB
.5KA^2
dSintheta=mwavelength
h(Fo)

12. formula for constructive interference in a diffraction grating
deltaU = deltaQ + deltaW
-KA
dSintheta=mwavelength
1/2wavelength

13. magnification equation
(Di)/(Do) or (Hi)/(Ho)
E/B
MC(deltaT)
sqrt(3KT/m)

14. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
nSintheta=nsintheta
(EMF)Rt/10
.5mV^2 + .5KA^2
V = (Vo) + at

15. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)
roegh
deltaU = deltaQ + deltaW

16. formula for Carnot efficiency
((Th) -(Tl))/(Th)
KQ/r
(1/Do) + (1/Di) = (1/f)
sqrt(3KT/m)

17. formula for power with current and resistance
(I^2)R
(I^2)RT
Q=CV
(1/Do) + (1/Di) = (1/f)

18. force a charge in a Bfield
dSintheta=mwavelength
qVB
n(Cv)(deltaT)
net work = delta K

19. velocity of an electrion as it exitws from the hole
qrB/m
(No)(wavelength)=(Nn)(new wavelength)
.5KA^2
((Qin) -(Qout))/(Qin)

20. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
G M/((d/2)^2)
BLv
(hc/wavelength)=h(Fo) +(Vs)
.5CV^2 or .5 Q^2/C or .5QV

21. isothermal
2nt=mwavelength
d/2
no temp change
E/B

22. units for voltage other than volts
2nt=mwavelength
L -LCostheta
Joules/Columb
(V^2)/R

23. formula for buoyant force
V+IR
sqrt(3KT/m)
roeVg
(No)(wavelength)=(Nn)(new wavelength)

24. formula for centripetal acceleration
constant volume
(V^2)/r
(Wnet)/(Qin)
M(Lf)

25. force of friction
(Fn)(mu)
inelastic collision
(Patm) + (Pgauge)
J= Ft

26. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
qE
joules/second
no force (right hand rule)

27. formula for the wavelength (debroglie wavelength) of a moving particle
-KA
Columbs/second
d/2
h/mv

28. formula for torque
2Pi * sqrt(l/g)
n(Cv)(deltaT)
rF
AV=(A2)(V2)

29. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
0
no temp change
qrB/m

30. voltage induced in a rod moving through a uniform magnetic field
V^2=(Vo)^2 +2a*change in x
Ed=V
BLv
AV=(A2)(V2)

31. type of collision where K is conserved
VI
elastic collision
MC(deltaT)
2nt=mwavelength

32. new wavelength of light as it enters a new substance
sqrt(T/(m/))
nSintheta=nsintheta
(No)(wavelength)=(Nn)(new wavelength)
BA

33. formula for period of a pendulum
(Di)/(Do) or (Hi)/(Ho)
2Pi * sqrt(l/g)
(hc/wavelength)=h(Fo) +(Vs)
hc/wavelength

34. formula for finding magnetic flux
BA
inelastic collision
(No)(wavelength)=(Nn)(new wavelength)
BLv

35. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
KI/r
.5mV^2 + .5KA^2
F/A
E/B

36. energy of a photon if wavelength is known
hc/wavelength
qrB/m
.5CV^2 or .5 Q^2/C or .5QV
-KA

37. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
dSintheta=mwavelength
no force (right hand rule)
qrB/m

38. snells law
V+IR
FV
nSintheta=nsintheta
VI

39. the force on a charge moving parallel to a magnetic field
Columbs/second
.5KA^2
e=mc^2
no force (right hand rule)

40. heat required to melt a substance
M(Lf)
1/2wavelength
(Patm) + (Pgauge)
(No)(wavelength)=(Nn)(new wavelength)

41. radius of curvature of a charged particle as it enters a uniform magnetic field
qrB/m
m(v^2)/qvB
constant pressure
(Fn)(mu)

42. work energy theorum
net work = delta K
e=mc^2
GM*M/(r^2)
constant volume

43. formula for finding the momentum of a photon
(Patm) + (Pgauge)
joules/second
h/wavelength
(Fn)(mu)

44. heat required to change temperature of a substance
joules/second
MC(deltaT)
(Fn)(mu)
nSintheta=nsintheta

45. total capacitance of capacitors in series
deltaU -deltaW
((Th) -(Tl))/(Th)
1/((1/C)+(1/C)..........)
mV -m(Vo)

46. the force on a charge in an electric field
qE
(V^2)/R
BLv
-KA

47. forgotten power equation
(I^2)RT
mgCostheta(mu)d
FV
(I^2)R

48. equation of continuity
AV=(A2)(V2)
V+IR
qE
sqrt(T/(m/))

49. type of collision where objects stick togerther
nSintheta=nsintheta
roeVg
perfectly inelastic collision
e=mc^2

50. formula for efficiency of a heat engine using work out
e=mc^2
.5CV^2 or .5 Q^2/C or .5QV
KQ/r
(Wnet)/(Qin)