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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. energy stored in a capacitor
pL/A
e=mc^2
.5CV^2 or .5 Q^2/C or .5QV
sqrt(T/(m/))

2. pressure
F/A
(Di)/(Do) or (Hi)/(Ho)
0
J= Ft

3. what direction is friction?
roegh
V^2=(Vo)^2 +2a*change in x
opposite motion
nSintheta=nsintheta

4. velocity of a molecule of gas
pL/A
(hc/wavelength)=h(Fo) +(Vs)
sqrt(3KT/m)
constant volume

5. focal length of a mirror with radius d
L -LCostheta
d/2
deltaU = deltaQ + deltaW
KQ/r

6. second kinematic
delta x = (Vo)t + .5at^2
perfectly inelastic collision
deltaU = deltaQ + deltaW
1/2wavelength

7. natural frequency of an open tube of length L
.5mV^2 + .5KA^2
1/2wavelength
G M/((d/2)^2)
qV

8. electric field in a distance r from a charge
(No)(wavelength)=(Nn)(new wavelength)
.5KA^2
k|Q|/r^2
constant volume

9. formula relating voltage and electric field
sqrt(T/(m/))
h/mv
AV=(A2)(V2)
Ed=V

10. isothermal
1/((1/C)+(1/C)..........)
1/4wavelength
GM*M/(r^2)
no temp change

11. formula for power with Voltage and resistance
(EMF)Rt/10
qVB
(V^2)/R
pL/A

12. voltage induced in a rod moving through a uniform magnetic field
2Pi * sqrt(l/g)
BLv
opposite motion
VI

13. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
constant volume
(V^2)/R
J= Ft

14. formula for finding the momentum of a photon
h/mv
h/wavelength
E/B
1/4wavelength

15. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
((Th) -(Tl))/(Th)
L -LCostheta
joules/second

16. hooke's law force of a spring
L -LCostheta
deltaU -deltaW
VI
-KA

17. type of collision where K is not conserved
rF
-KA
inelastic collision
qVB

18. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
h/wavelength
(hc/wavelength)=h(Fo) +(Vs)
(I^2)RT
nSintheta=nsintheta

19. formula for energy of a spring mass when spring is at maximum displacement
qE
.5KA^2
M(Lf)
(Fn)(mu)

20. change in internal energy during a cyclic process
GM*M/(r^2)
(Fn)(mu)
0
(Wnet)/(Qin)

21. formula for efficiency of a heat engine using work out
((Th) -(Tl))/(Th)
(No)(wavelength)=(Nn)(new wavelength)
(Wnet)/(Qin)
hc/wavelength

22. total capacitance of capacitors in series
h(Fo)
J= Ft
1/((1/C)+(1/C)..........)
dSintheta=mwavelength

23. snells law
sqrt(T/(m/))
1/2wavelength
nSintheta=nsintheta
V^2=(Vo)^2 +2a*change in x

24. heat required to change temperature of a substance
MC(deltaT)
M(Lf)
elastic collision
constant pressure

25. natural frequency of a closed tube of length L
1/4wavelength
pL/A
frequency never changes for light problems
FV

26. resistance of a wire
pL/A
BA
sqrt(T/(m/))
perfectly inelastic collision

27. force of gravity between two objects of mass m
BA
-KA
KQ/r
GM*M/(r^2)

28. formula for torque
(hc/wavelength)=h(Fo) +(Vs)
pL/A
sqrt(3KT/m)
rF

29. type of collision where objects stick togerther
Q=CV
sqrt(3KT/m)
perfectly inelastic collision
.5CV^2 or .5 Q^2/C or .5QV

30. lens/mirror equation
Joules/Columb
(I^2)R
(1/Do) + (1/Di) = (1/f)
opposite motion

31. formula for critical angle
Q=CV
L -LCostheta
(N2)/(N1)
hc/wavelength

32. formula equating energy and mass
e=mc^2
deltaU = deltaQ + deltaW
E/B
.5CV^2 or .5 Q^2/C or .5QV

33. electric potential a distance r from a charge
KQ/r
constant volume
.5KA^2
(1/Do) + (1/Di) = (1/f)

34. adibatic
(I^2)R
n(Cv)(deltaT)
Columbs/second
no heat flow

35. formula for power with current and voltage
VI
.5KA^2
(I^2)R
h/mv

36. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
(N2)/(N1)
elastic collision
L -LCostheta

37. formula for change in internal energy in a cosnstat volume PV process
KI/r
(3/2)nRdeltaT
(EMF)Rt/10
1/((1/C)+(1/C)..........)

38. units for voltage other than volts
KQ/r
Joules/Columb
J= Ft
qE

39. formula for constructive interference in a thin membrane with two phase changes
.5CV^2 or .5 Q^2/C or .5QV
M(Lf)
2nt=mwavelength
h(Fo)

40. formula for Carnot efficiency
sqrt(3KT/m)
((Th) -(Tl))/(Th)
joules/second
qrB/m

41. formula for constructive interference in a diffraction grating
(hc/wavelength)=h(Fo) +(Vs)
BA
(Fn)(mu)
dSintheta=mwavelength

42. formula to find the gauge pressure at the bottom of a pool
pL/A
((Th) -(Tl))/(Th)
roegh
GM*M/(r^2)

43. EMF of a battery having internal resistance R
(EMF)Rt/10
V+IR
elastic collision
no heat flow

44. formula for impulse involving momentum
(Fn)(mu)
mV -m(Vo)
MC(deltaT)
h(Fo)

45. magnification equation
(Di)/(Do) or (Hi)/(Ho)
opposite motion
perfectly inelastic collision
joules/second

46. the electric force between two objects of charge Q
Joules/Columb
K |q||Q|/r^2
(V^2)/r
(N2)/(N1)

47. formula for buoyant force
(EMF)Rt/10
roeVg
Columbs/second
G M/((d/2)^2)

48. isometric
FV
inelastic collision
(Patm) + (Pgauge)
constant volume

49. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
L -LCostheta
mV -m(Vo)
.5mV^2 + .5KA^2
no force (right hand rule)

50. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
k|Q|/r^2
MC(deltaT)
n(Cv)(deltaT)