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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. force of frction on an incline
pL/A
1/((1/C)+(1/C)..........)
(I^2)RT
mgCostheta(mu)d

2. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
K |q||Q|/r^2
(I^2)R
roeVg
G M/((d/2)^2)

3. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
V+IR
.5mV^2 + .5KA^2
m(v^2)/qvB
E/B

4. formula to find the gauge pressure at the bottom of a pool
GM*M/(r^2)
2nt=mwavelength
(V^2)/R
roegh

5. velocity of waves on a string if tension is known
KQ/r
sqrt(T/(m/))
rF
qV

6. formula for finding the momentum of a photon
(hc/wavelength)=h(Fo) +(Vs)
hc/wavelength
h/wavelength
opposite motion

7. formula for finding the work function of a metal if the cutoff frequency is known
net work = delta K
m(v^2)/qvB
h(Fo)
V^2=(Vo)^2 +2a*change in x

8. forgotten power equation
AV=(A2)(V2)
FV
E/B
GM*M/(r^2)

9. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
V^2=(Vo)^2 +2a*change in x
net work = delta K
qV

10. lens/mirror equation
nSintheta=nsintheta
(1/Do) + (1/Di) = (1/f)
no temp change
elastic collision

11. the units of power other than watts
L -LCostheta
dSintheta=mwavelength
joules/second
m(v^2)/qvB

12. the force on a charge in an electric field
(Wnet)/(Qin)
joules/second
qE
((Qin) -(Qout))/(Qin)

13. type of collision where K is not conserved
inelastic collision
roeVg
constant pressure
BA

14. electric field in a distance r from a charge
(Patm) + (Pgauge)
net work = delta K
k|Q|/r^2
2Pi * sqrt(l/g)

15. the units of current other than amps
KQ/r
h/mv
Columbs/second
roegh

16. heat during an isometric process
dSintheta=mwavelength
no temp change
n(Cv)(deltaT)
Columbs/second

17. new frequency of light as it enters a new substance
1/4wavelength
(V^2)/r
V^2=(Vo)^2 +2a*change in x
frequency never changes for light problems

18. work energy theorum
net work = delta K
constant volume
m(v^2)/qvB
(Wnet)/(Qin)

19. formula for Carnot efficiency
qV
.5CV^2 or .5 Q^2/C or .5QV
((Th) -(Tl))/(Th)
0

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

21. adibatic
no heat flow
V^2=(Vo)^2 +2a*change in x
(I^2)R
sqrt(3KT/m)

22. formula for constructive interference in a thin membrane with two phase changes
mgCostheta(mu)d
qVB
2nt=mwavelength
Columbs/second

23. formula for buoyant force
(V^2)/R
V+IR
frequency never changes for light problems
roeVg

24. formula for power with Voltage and resistance
(V^2)/R
nSintheta=nsintheta
2nt=mwavelength
E/B

25. formula for critical angle
pL/A
(N2)/(N1)
V^2=(Vo)^2 +2a*change in x
V+IR

26. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
AV=(A2)(V2)
Columbs/second
(Patm) + (Pgauge)

27. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
1/2wavelength
VI
1/4wavelength

28. isothermal
no temp change
1/4wavelength
h/mv
(Di)/(Do) or (Hi)/(Ho)

29. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
e=mc^2
roeVg
(V^2)/R

30. formula relating voltage and electric field
sqrt(3KT/m)
mgCostheta(mu)d
-KA
Ed=V

31. formula for constructive interference in a diffraction grating
frequency never changes for light problems
n(Cv)(deltaT)
inelastic collision
dSintheta=mwavelength

32. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
(I^2)R
KQ/r
V^2=(Vo)^2 +2a*change in x

33. type of collision where objects stick togerther
Joules/Columb
perfectly inelastic collision
delta x = (Vo)t + .5at^2
FV

34. velocity of a molecule of gas
net work = delta K
sqrt(3KT/m)
pL/A
KI/r

35. force of friction
constant volume
(I^2)RT
(V^2)/R
(Fn)(mu)

36. natural frequency of an open tube of length L
(No)(wavelength)=(Nn)(new wavelength)
1/2wavelength
(Patm) + (Pgauge)
qrB/m

37. second kinematic
delta x = (Vo)t + .5at^2
deltaU -deltaW
qE
(EMF)Rt/10

38. resistance of a wire
sqrt(T/(m/))
-KA
pL/A
mgCostheta(mu)d

39. magnification equation
V = (Vo) + at
(I^2)RT
K |q||Q|/r^2
(Di)/(Do) or (Hi)/(Ho)

40. formula equating energy and mass
e=mc^2
K |q||Q|/r^2
qVB
.5mV^2 + .5KA^2

41. electric potential a distance r from a charge
(I^2)R
net work = delta K
BA
KQ/r

42. formula for power with current and resistance
(I^2)R
2Pi * sqrt(l/g)
sqrt(3KT/m)
VI

43. focal length of a mirror with radius d
d/2
constant volume
(hc/wavelength)=h(Fo) +(Vs)
F/A

44. first kinematic
constant volume
deltaU = deltaQ + deltaW
AV=(A2)(V2)
V = (Vo) + at

45. snells law
Ed=V
nSintheta=nsintheta
0
qV

46. formula for torque
Columbs/second
1/2wavelength
.5mV^2 + .5KA^2
rF

47. formula for charge stored in a capciator
BLv
Ed=V
Q=CV
(I^2)RT

48. formula for change in internal energy in a cosnstat volume PV process
(1/Do) + (1/Di) = (1/f)
(3/2)nRdeltaT
.5CV^2 or .5 Q^2/C or .5QV
E/B

49. formula for energy of a spring mass when spring is at maximum displacement
deltaU -deltaW
inelastic collision
sqrt(3KT/m)
.5KA^2

50. formula for finding magnetic flux
sqrt(T/(m/))
(No)(wavelength)=(Nn)(new wavelength)
BA
no force (right hand rule)