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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. velocity of a molecule of gas
sqrt(3KT/m)
KI/r
Joules/Columb
KQ/r

2. what direction is friction?
qrB/m
2nt=mwavelength
nSintheta=nsintheta
opposite motion

3. equation of continuity
F/A
h/wavelength
AV=(A2)(V2)
(I^2)RT

4. formula to find the absoluate pressure at the bottom of a pool
qV
(I^2)RT
(Patm) + (Pgauge)
M(Lf)

5. formula for impluse involving time
roegh
BLv
GM*M/(r^2)
J= Ft

6. formula for efficiency of a heat engine using work out
sqrt(T/(m/))
nSintheta=nsintheta
(Wnet)/(Qin)
roeVg

7. formula to find the gauge pressure at the bottom of a pool
roegh
F/A
(Fn)(mu)
inelastic collision

8. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
((Qin) -(Qout))/(Qin)
nSintheta=nsintheta
Q=CV

9. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
k|Q|/r^2
.5mV^2 + .5KA^2
GM*M/(r^2)

10. formula for power with Voltage and resistance
(V^2)/R
delta x = (Vo)t + .5at^2
2nt=mwavelength
no heat flow

11. natural frequency of an open tube of length L
1/2wavelength
.5KA^2
(Fn)(mu)
hc/wavelength

12. heat required to melt a substance
M(Lf)
(EMF)Rt/10
frequency never changes for light problems
(Patm) + (Pgauge)

13. isothermal
no temp change
FV
hc/wavelength
(I^2)RT

14. formula for finding the momentum of a photon
h/wavelength
L -LCostheta
1/4wavelength
n(Cv)(deltaT)

15. the force on a charge moving parallel to a magnetic field
0
VI
((Qin) -(Qout))/(Qin)
no force (right hand rule)

16. second kinematic
Ed=V
G M/((d/2)^2)
(3/2)nRdeltaT
delta x = (Vo)t + .5at^2

17. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
1/2wavelength
KI/r
((Qin) -(Qout))/(Qin)

18. the force on a charge in an electric field
mgCostheta(mu)d
joules/second
qE
(1/Do) + (1/Di) = (1/f)

19. force of friction
(Fn)(mu)
(Patm) + (Pgauge)
n(Cv)(deltaT)
(V^2)/R

20. heat required to change temperature of a substance
MC(deltaT)
d/2
no force (right hand rule)
(V^2)/r

21. formula for the wavelength (debroglie wavelength) of a moving particle
(Patm) + (Pgauge)
pL/A
inelastic collision
h/mv

22. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
dSintheta=mwavelength
(hc/wavelength)=h(Fo) +(Vs)
Joules/Columb

23. forgotten power equation
h/wavelength
FV
VI
1/4wavelength

24. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
-KA
.5mV^2 + .5KA^2
KQ/r
roeVg

25. formula equating energy and mass
L -LCostheta
J= Ft
mgCostheta(mu)d
e=mc^2

26. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
n(Cv)(deltaT)
qVB
BA

27. isobaric
constant pressure
M(Lf)
sqrt(3KT/m)
.5KA^2

28. the units of power other than watts
joules/second
(V^2)/r
perfectly inelastic collision
no heat flow

29. total capacitance of capacitors in series
1/2wavelength
frequency never changes for light problems
1/((1/C)+(1/C)..........)
no heat flow

30. units for voltage other than volts
AV=(A2)(V2)
e=mc^2
Joules/Columb
MC(deltaT)

31. the units of current other than amps
sqrt(T/(m/))
BA
KI/r
Columbs/second

32. resistance of a wire
(1/Do) + (1/Di) = (1/f)
pL/A
qrB/m
sqrt(3KT/m)

33. formula for Carnot efficiency
1/((1/C)+(1/C)..........)
((Th) -(Tl))/(Th)
V+IR
no heat flow

34. natural frequency of a closed tube of length L
constant pressure
MC(deltaT)
hc/wavelength
1/4wavelength

35. first kinematic
V = (Vo) + at
((Qin) -(Qout))/(Qin)
e=mc^2
m(v^2)/qvB

36. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
h/wavelength
(Di)/(Do) or (Hi)/(Ho)
(Fn)(mu)

37. formula for power with current and resistance
(I^2)R
mV -m(Vo)
0
opposite motion

38. work energy theorum
V+IR
d/2
VI
net work = delta K

39. lens/mirror equation
-KA
qrB/m
pL/A
(1/Do) + (1/Di) = (1/f)

40. formula for critical angle
(N2)/(N1)
((Qin) -(Qout))/(Qin)
(hc/wavelength)=h(Fo) +(Vs)
2Pi * sqrt(l/g)

41. voltage induced in a rod moving through a uniform magnetic field
BLv
qrB/m
GM*M/(r^2)
deltaU -deltaW

42. formula for power with current and voltage
e=mc^2
VI
joules/second
FV

43. formula relating voltage and electric field
Ed=V
.5KA^2
(3/2)nRdeltaT
1/4wavelength

44. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
V = (Vo) + at
mgCostheta(mu)d
E/B
1/((1/C)+(1/C)..........)

45. snells law
constant volume
(EMF)Rt/10
joules/second
nSintheta=nsintheta

46. energy stored in a capacitor
(Di)/(Do) or (Hi)/(Ho)
2nt=mwavelength
rF
.5CV^2 or .5 Q^2/C or .5QV

47. force a charge in a Bfield
qVB
(1/Do) + (1/Di) = (1/f)
hc/wavelength
V = (Vo) + at

48. formula for efficiency not using work out
((Th) -(Tl))/(Th)
((Qin) -(Qout))/(Qin)
opposite motion
M(Lf)

49. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
no heat flow
(I^2)RT
net work = delta K
Columbs/second

50. hooke's law force of a spring
(V^2)/r
2Pi * sqrt(l/g)
mgCostheta(mu)d
-KA