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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. equation of continuity
dSintheta=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)
E/B

2. formula for efficiency of a heat engine using work out
Ed=V
(Wnet)/(Qin)
MC(deltaT)
.5KA^2

3. energy of a photon if wavelength is known
hc/wavelength
E/B
MC(deltaT)
pL/A

4. formula for buoyant force
(V^2)/r
no force (right hand rule)
roeVg
(I^2)RT

5. formula for period of a pendulum
2Pi * sqrt(l/g)
Q=CV
(I^2)RT
m(v^2)/qvB

6. formula for constructive interference in a diffraction grating
pL/A
-KA
1/((1/C)+(1/C)..........)
dSintheta=mwavelength

7. total capacitance of capacitors in series
perfectly inelastic collision
1/((1/C)+(1/C)..........)
(Wnet)/(Qin)
rF

8. formula for efficiency not using work out
1/4wavelength
dSintheta=mwavelength
(3/2)nRdeltaT
((Qin) -(Qout))/(Qin)

9. the force on a charge in an electric field
k|Q|/r^2
qE
(I^2)R
deltaU = deltaQ + deltaW

10. type of collision where K is not conserved
VI
inelastic collision
constant volume
roegh

11. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
VI
FV
E/B
J= Ft

12. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
elastic collision
M(Lf)
(EMF)Rt/10
roegh

13. formula for torque
opposite motion
qrB/m
rF
(V^2)/r

14. force of gravity between two objects of mass m
delta x = (Vo)t + .5at^2
m(v^2)/qvB
h(Fo)
GM*M/(r^2)

15. voltage induced in a rod moving through a uniform magnetic field
BLv
((Qin) -(Qout))/(Qin)
-KA
no temp change

16. the electric force between two objects of charge Q
KQ/r
((Th) -(Tl))/(Th)
deltaU -deltaW
K |q||Q|/r^2

17. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
BLv
V^2=(Vo)^2 +2a*change in x
(I^2)RT
-KA

18. first kinematic
V = (Vo) + at
GM*M/(r^2)
(V^2)/r
nSintheta=nsintheta

19. new frequency of light as it enters a new substance
qVB
no temp change
frequency never changes for light problems
1/4wavelength

20. forgotten power equation
FV
roeVg
h/mv
pL/A

21. velocity of an electrion as it exitws from the hole
2Pi * sqrt(l/g)
MC(deltaT)
(I^2)R
qrB/m

22. natural frequency of a closed tube of length L
sqrt(3KT/m)
1/4wavelength
joules/second
qrB/m

23. heat during a cyclic process (net heat)
deltaU -deltaW
(N2)/(N1)
E/B
(3/2)nRdeltaT

24. formula for power with current and voltage
2nt=mwavelength
nSintheta=nsintheta
.5mV^2 + .5KA^2
VI

25. 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
dSintheta=mwavelength
1/((1/C)+(1/C)..........)

26. formula for impluse involving time
J= Ft
BA
((Th) -(Tl))/(Th)
mV -m(Vo)

27. the force on a charge moving parallel to a magnetic field
mgCostheta(mu)d
Joules/Columb
(N2)/(N1)
no force (right hand rule)

28. force of friction
hc/wavelength
(Fn)(mu)
dSintheta=mwavelength
BLv

29. what direction is friction?
AV=(A2)(V2)
opposite motion
(Fn)(mu)
VI

30. change in internal energy during a cyclic process
delta x = (Vo)t + .5at^2
(1/Do) + (1/Di) = (1/f)
0
(Di)/(Do) or (Hi)/(Ho)

31. energy stored in a capacitor
deltaU = deltaQ + deltaW
(hc/wavelength)=h(Fo) +(Vs)
(Di)/(Do) or (Hi)/(Ho)
.5CV^2 or .5 Q^2/C or .5QV

32. units for voltage other than volts
(No)(wavelength)=(Nn)(new wavelength)
Ed=V
sqrt(3KT/m)
Joules/Columb

33. pressure
e=mc^2
frequency never changes for light problems
dSintheta=mwavelength
F/A

34. snells law
elastic collision
(I^2)R
K |q||Q|/r^2
nSintheta=nsintheta

35. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
Q=CV
frequency never changes for light problems
FV

36. formula equating energy and mass
AV=(A2)(V2)
rF
e=mc^2
KI/r

37. formula for the wavelength (debroglie wavelength) of a moving particle
dSintheta=mwavelength
h/mv
no temp change
Joules/Columb

38. natural frequency of an open tube of length L
M(Lf)
k|Q|/r^2
1/2wavelength
G M/((d/2)^2)

39. focal length of a mirror with radius d
(Fn)(mu)
no heat flow
K |q||Q|/r^2
d/2

40. isobaric
.5KA^2
no heat flow
constant pressure
inelastic collision

41. formula to find the absoluate pressure at the bottom of a pool
net work = delta K
(Patm) + (Pgauge)
0
delta x = (Vo)t + .5at^2

42. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
((Qin) -(Qout))/(Qin)
V^2=(Vo)^2 +2a*change in x
G M/((d/2)^2)
qVB

43. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
MC(deltaT)
qVB
qV
V = (Vo) + at

44. formula to find the gauge pressure at the bottom of a pool
perfectly inelastic collision
h(Fo)
V^2=(Vo)^2 +2a*change in x
roegh

45. isometric
roeVg
Q=CV
constant volume
e=mc^2

46. second kinematic
delta x = (Vo)t + .5at^2
V+IR
0
(No)(wavelength)=(Nn)(new wavelength)

47. formula for Carnot efficiency
KQ/r
h/mv
no heat flow
((Th) -(Tl))/(Th)

48. the units of current other than amps
Columbs/second
mV -m(Vo)
J= Ft
M(Lf)

49. formula for finding the magnetic field a distance r from a current carrying wire
h/wavelength
KI/r
0
2nt=mwavelength

50. formula for height of the block (at the start of a pendulum string) in terms of theta and L
2nt=mwavelength
(1/Do) + (1/Di) = (1/f)
m(v^2)/qvB
L -LCostheta