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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 charge traveling at a constant veloc ity through crossed E and B fields
E/B
L -LCostheta
roegh
(Fn)(mu)

2. equation of continuity
rF
AV=(A2)(V2)
VI
net work = delta K

3. focal length of a mirror with radius d
constant pressure
(1/Do) + (1/Di) = (1/f)
dSintheta=mwavelength
d/2

4. lens/mirror equation
V = (Vo) + at
BLv
(1/Do) + (1/Di) = (1/f)
d/2

5. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
K |q||Q|/r^2
F/A
(I^2)RT
((Qin) -(Qout))/(Qin)

6. isometric
KI/r
constant volume
hc/wavelength
VI

7. formula for efficiency of a heat engine using work out
0
FV
(Wnet)/(Qin)
(N2)/(N1)

8. forgotten power equation
(EMF)Rt/10
J= Ft
FV
qV

9. heat required to melt a substance
(Fn)(mu)
.5CV^2 or .5 Q^2/C or .5QV
(V^2)/r
M(Lf)

10. formula for constructive interference in a diffraction grating
(Fn)(mu)
dSintheta=mwavelength
perfectly inelastic collision
qrB/m

11. formula to find the gauge pressure at the bottom of a pool
hc/wavelength
.5CV^2 or .5 Q^2/C or .5QV
rF
roegh

12. resistance of a wire
qVB
joules/second
pL/A
1/((1/C)+(1/C)..........)

13. formula for constructive interference in a thin membrane with two phase changes
(EMF)Rt/10
no temp change
1/2wavelength
2nt=mwavelength

14. second kinematic
delta x = (Vo)t + .5at^2
(hc/wavelength)=h(Fo) +(Vs)
(3/2)nRdeltaT
E/B

15. third kinematic
V^2=(Vo)^2 +2a*change in x
no heat flow
elastic collision
2Pi * sqrt(l/g)

16. formula for power with current and resistance
delta x = (Vo)t + .5at^2
(I^2)R
no force (right hand rule)
qV

17. the units of power other than watts
qE
m(v^2)/qvB
FV
joules/second

18. formula for power with current and voltage
V = (Vo) + at
VI
roeVg
m(v^2)/qvB

19. magnification equation
VI
qV
(Di)/(Do) or (Hi)/(Ho)
h/mv

20. the electric force between two objects of charge Q
(Di)/(Do) or (Hi)/(Ho)
dSintheta=mwavelength
MC(deltaT)
K |q||Q|/r^2

21. hooke's law force of a spring
h/wavelength
.5CV^2 or .5 Q^2/C or .5QV
deltaU -deltaW
-KA

22. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
BA
((Th) -(Tl))/(Th)
Ed=V
.5mV^2 + .5KA^2

23. electric potential a distance r from a charge
KQ/r
.5mV^2 + .5KA^2
nSintheta=nsintheta
Columbs/second

24. energy stored in a capacitor
deltaU = deltaQ + deltaW
.5CV^2 or .5 Q^2/C or .5QV
no temp change
2Pi * sqrt(l/g)

25. natural frequency of a closed tube of length L
d/2
V = (Vo) + at
L -LCostheta
1/4wavelength

26. formula for charge stored in a capciator
F/A
qE
deltaU -deltaW
Q=CV

27. velocity of an electrion as it exitws from the hole
(EMF)Rt/10
(V^2)/R
Joules/Columb
qrB/m

28. change in internal energy during a cyclic process
(Fn)(mu)
V = (Vo) + at
((Qin) -(Qout))/(Qin)
0

29. adibatic
no heat flow
h/wavelength
frequency never changes for light problems
2Pi * sqrt(l/g)

30. velocity of waves on a string if tension is known
2Pi * sqrt(l/g)
sqrt(T/(m/))
h/mv
F/A

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

32. snells law
(V^2)/R
nSintheta=nsintheta
.5mV^2 + .5KA^2
no force (right hand rule)

33. what direction is friction?
(No)(wavelength)=(Nn)(new wavelength)
opposite motion
pL/A
1/4wavelength

34. formula for period of a pendulum
h/mv
delta x = (Vo)t + .5at^2
nSintheta=nsintheta
2Pi * sqrt(l/g)

35. formula for finding the momentum of a photon
h/wavelength
(Patm) + (Pgauge)
d/2
no heat flow

36. type of collision where objects stick togerther
perfectly inelastic collision
G M/((d/2)^2)
d/2
FV

37. formula for impulse involving momentum
qV
mV -m(Vo)
1/4wavelength
BA

38. formula for critical angle
AV=(A2)(V2)
Joules/Columb
(N2)/(N1)
(EMF)Rt/10

39. formula relating voltage and electric field
k|Q|/r^2
Columbs/second
Ed=V
mV -m(Vo)

40. units for voltage other than volts
no force (right hand rule)
Joules/Columb
((Qin) -(Qout))/(Qin)
GM*M/(r^2)

41. formula for change in internal energy in a cosnstat volume PV process
(V^2)/r
(3/2)nRdeltaT
-KA
.5mV^2 + .5KA^2

42. radius of curvature of a charged particle as it enters a uniform magnetic field
frequency never changes for light problems
FV
m(v^2)/qvB
h/mv

43. formula for Carnot efficiency
h/wavelength
((Th) -(Tl))/(Th)
V^2=(Vo)^2 +2a*change in x
m(v^2)/qvB

44. heat during a cyclic process (net heat)
((Qin) -(Qout))/(Qin)
e=mc^2
deltaU -deltaW
L -LCostheta

45. formula for power with Voltage and resistance
(V^2)/R
KQ/r
h/mv
opposite motion

46. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
-KA
elastic collision
KI/r

47. the units of current other than amps
roeVg
G M/((d/2)^2)
qE
Columbs/second

48. heat during an isometric process
(Fn)(mu)
constant pressure
n(Cv)(deltaT)
sqrt(3KT/m)

49. force of gravity between two objects of mass m
.5KA^2
GM*M/(r^2)
elastic collision
V+IR

50. new wavelength of light as it enters a new substance
2nt=mwavelength
Q=CV
(Patm) + (Pgauge)
(No)(wavelength)=(Nn)(new wavelength)