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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. electric field in a distance r from a charge
d/2
(1/Do) + (1/Di) = (1/f)
Columbs/second
k|Q|/r^2

2. formula for power with current and voltage
VI
E/B
(Fn)(mu)
1/4wavelength

3. formula for change in internal energy in a cosnstat volume PV process
k|Q|/r^2
sqrt(T/(m/))
(Wnet)/(Qin)
(3/2)nRdeltaT

4. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
VI
Ed=V
m(v^2)/qvB

5. type of collision where K is conserved
qrB/m
V^2=(Vo)^2 +2a*change in x
F/A
elastic collision

6. what direction is friction?
((Th) -(Tl))/(Th)
opposite motion
(hc/wavelength)=h(Fo) +(Vs)
qE

7. hooke's law force of a spring
AV=(A2)(V2)
V+IR
(EMF)Rt/10
-KA

8. natural frequency of an open tube of length L
-KA
1/2wavelength
joules/second
F/A

9. new frequency of light as it enters a new substance
qV
.5mV^2 + .5KA^2
pL/A
frequency never changes for light problems

10. heat required to melt a substance
m(v^2)/qvB
M(Lf)
net work = delta K
no temp change

11. velocity of an electrion as it exitws from the hole
0
qrB/m
(Patm) + (Pgauge)
frequency never changes for light problems

12. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
G M/((d/2)^2)
perfectly inelastic collision
no heat flow

13. formula for constructive interference in a thin membrane with two phase changes
roeVg
2nt=mwavelength
(3/2)nRdeltaT
G M/((d/2)^2)

14. formula relating voltage and electric field
1/4wavelength
constant pressure
Ed=V
V^2=(Vo)^2 +2a*change in x

15. formula for energy of a spring mass when spring is at maximum displacement
d/2
Q=CV
nSintheta=nsintheta
.5KA^2

16. electric potential a distance r from a charge
M(Lf)
KQ/r
roeVg
sqrt(3KT/m)

17. isothermal
k|Q|/r^2
no force (right hand rule)
no temp change
BA

18. formula for finding magnetic flux
roeVg
((Th) -(Tl))/(Th)
BA
(V^2)/r

19. equation for the first law of thermodynamics
(1/Do) + (1/Di) = (1/f)
deltaU = deltaQ + deltaW
G M/((d/2)^2)
-KA

20. the electric force between two objects of charge Q
joules/second
Columbs/second
K |q||Q|/r^2
h/wavelength

21. focal length of a mirror with radius d
constant pressure
d/2
nSintheta=nsintheta
sqrt(3KT/m)

22. velocity of a molecule of gas
.5CV^2 or .5 Q^2/C or .5QV
Joules/Columb
sqrt(3KT/m)
(1/Do) + (1/Di) = (1/f)

23. formula for period of a pendulum
Q=CV
2Pi * sqrt(l/g)
qVB
roeVg

24. formula to find the absoluate pressure at the bottom of a pool
KI/r
dSintheta=mwavelength
(Patm) + (Pgauge)
(Fn)(mu)

25. formula to find the gauge pressure at the bottom of a pool
roegh
qVB
(1/Do) + (1/Di) = (1/f)
h(Fo)

26. force of friction
1/4wavelength
((Qin) -(Qout))/(Qin)
J= Ft
(Fn)(mu)

27. work energy theorum
d/2
(V^2)/r
net work = delta K
(1/Do) + (1/Di) = (1/f)

28. units for voltage other than volts
G M/((d/2)^2)
perfectly inelastic collision
n(Cv)(deltaT)
Joules/Columb

29. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
constant pressure
2nt=mwavelength
m(v^2)/qvB

30. the force on a charge moving parallel to a magnetic field
E/B
no force (right hand rule)
no temp change
constant pressure

31. magnification equation
k|Q|/r^2
(Di)/(Do) or (Hi)/(Ho)
.5mV^2 + .5KA^2
hc/wavelength

32. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
Columbs/second
k|Q|/r^2
rF

33. radius of curvature of a charged particle as it enters a uniform magnetic field
1/2wavelength
sqrt(T/(m/))
m(v^2)/qvB
KQ/r

34. formula for power with current and resistance
frequency never changes for light problems
KQ/r
(I^2)R
VI

35. formula for finding the work function of a metal if the cutoff frequency is known
(Fn)(mu)
no temp change
h(Fo)
Joules/Columb

36. the units of power other than watts
(3/2)nRdeltaT
(N2)/(N1)
joules/second
h/wavelength

37. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
sqrt(T/(m/))
inelastic collision
roegh

38. force of gravity between two objects of mass m
qVB
(V^2)/r
roeVg
GM*M/(r^2)

39. formula for impulse involving momentum
2Pi * sqrt(l/g)
mV -m(Vo)
h/wavelength
joules/second

40. formula for torque
(Fn)(mu)
rF
roegh
qrB/m

41. formula for impluse involving time
h/wavelength
J= Ft
deltaU = deltaQ + deltaW
K |q||Q|/r^2

42. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
(Fn)(mu)
K |q||Q|/r^2
h(Fo)

43. force a charge in a Bfield
Columbs/second
h/mv
qVB
(No)(wavelength)=(Nn)(new wavelength)

44. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
KI/r
K |q||Q|/r^2
elastic collision

45. isometric
d/2
1/2wavelength
elastic collision
constant volume

46. the units of current other than amps
Columbs/second
d/2
.5mV^2 + .5KA^2
Q=CV

47. force of frction on an incline
V^2=(Vo)^2 +2a*change in x
opposite motion
mgCostheta(mu)d
delta x = (Vo)t + .5at^2

48. isobaric
qVB
frequency never changes for light problems
constant pressure
2nt=mwavelength

49. equation of continuity
(Patm) + (Pgauge)
AV=(A2)(V2)
(Wnet)/(Qin)
net work = delta K

50. the force on a charge in an electric field
1/2wavelength
nSintheta=nsintheta
F/A
qE