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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. formula for buoyant force
1/2wavelength
roeVg
(Fn)(mu)
((Th) -(Tl))/(Th)

2. type of collision where objects stick togerther
sqrt(T/(m/))
KI/r
perfectly inelastic collision
d/2

3. natural frequency of a closed tube of length L
KI/r
dSintheta=mwavelength
perfectly inelastic collision
1/4wavelength

4. what direction is friction?
K |q||Q|/r^2
J= Ft
opposite motion
(hc/wavelength)=h(Fo) +(Vs)

5. force of frction on an incline
(1/Do) + (1/Di) = (1/f)
mgCostheta(mu)d
n(Cv)(deltaT)
L -LCostheta

6. formula for impulse involving momentum
mV -m(Vo)
0
G M/((d/2)^2)
sqrt(3KT/m)

7. the force on a charge in an electric field
GM*M/(r^2)
E/B
qV
qE

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
E/B
d/2
(I^2)RT
roegh

9. natural frequency of an open tube of length L
(hc/wavelength)=h(Fo) +(Vs)
1/2wavelength
(N2)/(N1)
roegh

10. equation of continuity
.5mV^2 + .5KA^2
1/4wavelength
mV -m(Vo)
AV=(A2)(V2)

11. the electric force between two objects of charge Q
KQ/r
(Di)/(Do) or (Hi)/(Ho)
deltaU -deltaW
K |q||Q|/r^2

12. the units of power other than watts
qrB/m
net work = delta K
joules/second
VI

13. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
pL/A
.5mV^2 + .5KA^2
h/wavelength

14. work energy theorum
delta x = (Vo)t + .5at^2
net work = delta K
hc/wavelength
F/A

15. velocity of a molecule of gas
sqrt(3KT/m)
roegh
L -LCostheta
hc/wavelength

16. pressure
FV
F/A
(Patm) + (Pgauge)
0

17. change in internal energy during a cyclic process
(Patm) + (Pgauge)
mV -m(Vo)
sqrt(T/(m/))
0

18. formula equating energy and mass
no force (right hand rule)
e=mc^2
roeVg
V+IR

19. focal length of a mirror with radius d
m(v^2)/qvB
qrB/m
d/2
Joules/Columb

20. formula for finding the work function of a metal if the cutoff frequency is known
h/mv
h(Fo)
d/2
mgCostheta(mu)d

21. electric field in a distance r from a charge
m(v^2)/qvB
(I^2)RT
k|Q|/r^2
(Fn)(mu)

22. voltage induced in a rod moving through a uniform magnetic field
V+IR
KI/r
opposite motion
BLv

23. forgotten power equation
mV -m(Vo)
1/((1/C)+(1/C)..........)
FV
KI/r

24. formula for constructive interference in a thin membrane with two phase changes
inelastic collision
(V^2)/R
sqrt(T/(m/))
2nt=mwavelength

25. equation for the first law of thermodynamics
qE
n(Cv)(deltaT)
deltaU = deltaQ + deltaW
(Patm) + (Pgauge)

26. formula for efficiency not using work out
m(v^2)/qvB
((Qin) -(Qout))/(Qin)
.5mV^2 + .5KA^2
GM*M/(r^2)

27. third kinematic
V^2=(Vo)^2 +2a*change in x
deltaU = deltaQ + deltaW
mV -m(Vo)
perfectly inelastic collision

28. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
d/2
(hc/wavelength)=h(Fo) +(Vs)
((Qin) -(Qout))/(Qin)
BLv

29. new frequency of light as it enters a new substance
no force (right hand rule)
frequency never changes for light problems
(No)(wavelength)=(Nn)(new wavelength)
perfectly inelastic collision

30. snells law
nSintheta=nsintheta
qVB
k|Q|/r^2
h/wavelength

31. formula for constructive interference in a diffraction grating
2Pi * sqrt(l/g)
dSintheta=mwavelength
(N2)/(N1)
K |q||Q|/r^2

32. heat required to melt a substance
0
AV=(A2)(V2)
M(Lf)
(hc/wavelength)=h(Fo) +(Vs)

33. energy stored in a capacitor
V+IR
e=mc^2
.5CV^2 or .5 Q^2/C or .5QV
rF

34. isometric
e=mc^2
(I^2)RT
1/((1/C)+(1/C)..........)
constant volume

35. lens/mirror equation
KQ/r
((Qin) -(Qout))/(Qin)
m(v^2)/qvB
(1/Do) + (1/Di) = (1/f)

36. force of friction
KI/r
(Fn)(mu)
hc/wavelength
L -LCostheta

37. formula for power with current and resistance
(I^2)R
constant volume
0
qVB

38. formula for finding the magnetic field a distance r from a current carrying wire
(Wnet)/(Qin)
KI/r
Ed=V
no temp change

39. formula for power with current and voltage
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)
VI
d/2

40. velocity of waves on a string if tension is known
m(v^2)/qvB
0
sqrt(T/(m/))
qVB

41. 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
e=mc^2
perfectly inelastic collision
constant volume

42. formula for centripetal acceleration
qV
no force (right hand rule)
(V^2)/r
((Qin) -(Qout))/(Qin)

43. formula to find the gauge pressure at the bottom of a pool
2nt=mwavelength
sqrt(T/(m/))
h/mv
roegh

44. formula for finding magnetic flux
BA
KQ/r
F/A
qV

45. formula for period of a pendulum
.5KA^2
2Pi * sqrt(l/g)
(EMF)Rt/10
nSintheta=nsintheta

46. formula for finding the momentum of a photon
(hc/wavelength)=h(Fo) +(Vs)
sqrt(3KT/m)
Q=CV
h/wavelength

47. formula for charge stored in a capciator
m(v^2)/qvB
Q=CV
L -LCostheta
.5mV^2 + .5KA^2

48. heat during a cyclic process (net heat)
V+IR
(I^2)R
.5KA^2
deltaU -deltaW

49. formula for Carnot efficiency
AV=(A2)(V2)
-KA
((Th) -(Tl))/(Th)
h/wavelength

50. formula for torque
h/wavelength
rF
n(Cv)(deltaT)
(EMF)Rt/10