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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. equation of continuity
AV=(A2)(V2)
rF
h/wavelength
roegh

2. energy stored in a capacitor
V+IR
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV
(Wnet)/(Qin)

3. the force on a charge moving parallel to a magnetic field
no temp change
BA
F/A
no force (right hand rule)

4. formula for change in internal energy in a cosnstat volume PV process
(Fn)(mu)
(3/2)nRdeltaT
(EMF)Rt/10
.5mV^2 + .5KA^2

5. formula for finding magnetic flux
2nt=mwavelength
BA
no temp change
M(Lf)

6. force of gravity between two objects of mass m
GM*M/(r^2)
G M/((d/2)^2)
KI/r
2Pi * sqrt(l/g)

7. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
1/((1/C)+(1/C)..........)
V = (Vo) + at
E/B
hc/wavelength

8. magnification equation
(Di)/(Do) or (Hi)/(Ho)
Joules/Columb
K |q||Q|/r^2
E/B

9. formula for Carnot efficiency
n(Cv)(deltaT)
inelastic collision
((Th) -(Tl))/(Th)
constant volume

10. velocity of a molecule of gas
dSintheta=mwavelength
Columbs/second
sqrt(3KT/m)
hc/wavelength

11. radius of curvature of a charged particle as it enters a uniform magnetic field
inelastic collision
Ed=V
(I^2)R
m(v^2)/qvB

12. isometric
(No)(wavelength)=(Nn)(new wavelength)
qE
constant volume
(I^2)R

13. velocity of an electrion as it exitws from the hole
no temp change
VI
qrB/m
BA

14. formula for impluse involving time
MC(deltaT)
mgCostheta(mu)d
net work = delta K
J= Ft

15. third kinematic
BLv
Columbs/second
qrB/m
V^2=(Vo)^2 +2a*change in x

16. formula for period of a pendulum
2Pi * sqrt(l/g)
sqrt(T/(m/))
nSintheta=nsintheta
frequency never changes for light problems

17. lens/mirror equation
constant volume
(1/Do) + (1/Di) = (1/f)
Q=CV
L -LCostheta

18. snells law
(3/2)nRdeltaT
(Fn)(mu)
roegh
nSintheta=nsintheta

19. natural frequency of a closed tube of length L
KI/r
no force (right hand rule)
1/4wavelength
roegh

20. heat during an isometric process
(I^2)R
n(Cv)(deltaT)
no temp change
m(v^2)/qvB

21. formula for impulse involving momentum
mV -m(Vo)
0
Q=CV
dSintheta=mwavelength

22. the units of current other than amps
1/((1/C)+(1/C)..........)
Columbs/second
delta x = (Vo)t + .5at^2
h/wavelength

23. voltage induced in a rod moving through a uniform magnetic field
(EMF)Rt/10
E/B
BLv
Columbs/second

24. second kinematic
no force (right hand rule)
hc/wavelength
d/2
delta x = (Vo)t + .5at^2

25. the force on a charge in an electric field
delta x = (Vo)t + .5at^2
h(Fo)
qE
no heat flow

26. formula for efficiency not using work out
h(Fo)
roegh
((Qin) -(Qout))/(Qin)
Q=CV

27. force of friction
(Patm) + (Pgauge)
no temp change
K |q||Q|/r^2
(Fn)(mu)

28. force of frction on an incline
(V^2)/R
mgCostheta(mu)d
(Wnet)/(Qin)
1/4wavelength

29. new frequency of light as it enters a new substance
VI
frequency never changes for light problems
k|Q|/r^2
qVB

30. equation for the first law of thermodynamics
no force (right hand rule)
e=mc^2
deltaU = deltaQ + deltaW
hc/wavelength

31. formula for torque
rF
(1/Do) + (1/Di) = (1/f)
elastic collision
constant pressure

32. electric field in a distance r from a charge
constant pressure
m(v^2)/qvB
k|Q|/r^2
Q=CV

33. energy of a photon if wavelength is known
J= Ft
(3/2)nRdeltaT
hc/wavelength
-KA

34. formula to find the gauge pressure at the bottom of a pool
(N2)/(N1)
roegh
J= Ft
KQ/r

35. velocity of waves on a string if tension is known
E/B
((Qin) -(Qout))/(Qin)
sqrt(T/(m/))
hc/wavelength

36. 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
hc/wavelength
e=mc^2
no force (right hand rule)

37. formula for power with Voltage and resistance
roegh
(V^2)/R
roeVg
frequency never changes for light problems

38. formula for critical angle
AV=(A2)(V2)
.5mV^2 + .5KA^2
opposite motion
(N2)/(N1)

39. work energy theorum
rF
((Qin) -(Qout))/(Qin)
(I^2)RT
net work = delta K

40. change in internal energy during a cyclic process
roegh
0
G M/((d/2)^2)
h(Fo)

41. formula for buoyant force
roeVg
opposite motion
AV=(A2)(V2)
nSintheta=nsintheta

42. pressure
F/A
delta x = (Vo)t + .5at^2
perfectly inelastic collision
E/B

43. formula for power with current and resistance
0
(I^2)RT
(I^2)R
.5CV^2 or .5 Q^2/C or .5QV

44. forgotten power equation
(N2)/(N1)
constant volume
FV
(Patm) + (Pgauge)

45. units for voltage other than volts
no temp change
Joules/Columb
J= Ft
2Pi * sqrt(l/g)

46. total capacitance of capacitors in series
h/wavelength
sqrt(3KT/m)
deltaU = deltaQ + deltaW
1/((1/C)+(1/C)..........)

47. force a charge in a Bfield
h/mv
qVB
Ed=V
(1/Do) + (1/Di) = (1/f)

48. isobaric
e=mc^2
constant pressure
1/4wavelength
J= Ft

49. formula for power with current and voltage
VI
E/B
qrB/m
-KA

50. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
deltaU -deltaW
0
sqrt(T/(m/))