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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. pressure
V = (Vo) + at
k|Q|/r^2
-KA
F/A

2. formula for power with current and voltage
MC(deltaT)
E/B
VI
e=mc^2

3. the units of power other than watts
h/mv
KQ/r
joules/second
roeVg

4. formula for centripetal acceleration
(V^2)/r
(N2)/(N1)
2Pi * sqrt(l/g)
constant volume

5. adibatic
K |q||Q|/r^2
elastic collision
F/A
no heat flow

6. formula for energy of a spring mass when spring is at maximum displacement
net work = delta K
V^2=(Vo)^2 +2a*change in x
KI/r
.5KA^2

7. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
qVB
h(Fo)
.5mV^2 + .5KA^2
hc/wavelength

8. natural frequency of a closed tube of length L
no temp change
1/4wavelength
2nt=mwavelength
e=mc^2

9. snells law
qrB/m
nSintheta=nsintheta
roeVg
.5CV^2 or .5 Q^2/C or .5QV

10. force of gravity between two objects of mass m
KI/r
M(Lf)
roeVg
GM*M/(r^2)

11. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
2nt=mwavelength
n(Cv)(deltaT)
G M/((d/2)^2)

12. force of frction on an incline
(I^2)R
pL/A
KQ/r
mgCostheta(mu)d

13. formula for charge stored in a capciator
(V^2)/R
Q=CV
E/B
mV -m(Vo)

14. formula for period of a pendulum
2Pi * sqrt(l/g)
.5mV^2 + .5KA^2
(I^2)RT
E/B

15. total capacitance of capacitors in series
(hc/wavelength)=h(Fo) +(Vs)
1/((1/C)+(1/C)..........)
h(Fo)
Joules/Columb

16. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
hc/wavelength
L -LCostheta
1/((1/C)+(1/C)..........)

17. formula for critical angle
.5mV^2 + .5KA^2
mV -m(Vo)
(N2)/(N1)
V^2=(Vo)^2 +2a*change in x

18. the units of current other than amps
Columbs/second
dSintheta=mwavelength
BLv
V = (Vo) + at

19. heat during an isometric process
KI/r
hc/wavelength
n(Cv)(deltaT)
(V^2)/r

20. the force on a charge in an electric field
V = (Vo) + at
2Pi * sqrt(l/g)
VI
qE

21. formula for constructive interference in a diffraction grating
KQ/r
dSintheta=mwavelength
d/2
h/mv

22. electric potential a distance r from a charge
2nt=mwavelength
m(v^2)/qvB
KQ/r
h/mv

23. EMF of a battery having internal resistance R
(3/2)nRdeltaT
V+IR
L -LCostheta
1/((1/C)+(1/C)..........)

24. voltage induced in a rod moving through a uniform magnetic field
1/2wavelength
BLv
.5KA^2
e=mc^2

25. velocity of an electrion as it exitws from the hole
J= Ft
m(v^2)/qvB
qrB/m
h/mv

26. forgotten power equation
(Wnet)/(Qin)
FV
frequency never changes for light problems
deltaU = deltaQ + deltaW

27. the force on a charge moving parallel to a magnetic field
(Di)/(Do) or (Hi)/(Ho)
no heat flow
net work = delta K
no force (right hand rule)

28. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
BA
(hc/wavelength)=h(Fo) +(Vs)
frequency never changes for light problems
qrB/m

29. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
no force (right hand rule)
1/2wavelength
hc/wavelength
E/B

30. electric field in a distance r from a charge
k|Q|/r^2
1/((1/C)+(1/C)..........)
h/wavelength
mV -m(Vo)

31. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
mV -m(Vo)
roeVg
Joules/Columb
G M/((d/2)^2)

32. units for voltage other than volts
Joules/Columb
(1/Do) + (1/Di) = (1/f)
elastic collision
net work = delta K

33. formula for finding the magnetic field a distance r from a current carrying wire
1/2wavelength
roeVg
mV -m(Vo)
KI/r

34. new wavelength of light as it enters a new substance
((Qin) -(Qout))/(Qin)
V = (Vo) + at
(Fn)(mu)
(No)(wavelength)=(Nn)(new wavelength)

35. velocity of waves on a string if tension is known
.5CV^2 or .5 Q^2/C or .5QV
sqrt(T/(m/))
J= Ft
rF

36. formula to find the absoluate pressure at the bottom of a pool
constant pressure
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)
deltaU = deltaQ + deltaW

37. hooke's law force of a spring
-KA
sqrt(3KT/m)
hc/wavelength
L -LCostheta

38. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
Ed=V
1/((1/C)+(1/C)..........)
roegh

39. lens/mirror equation
(No)(wavelength)=(Nn)(new wavelength)
((Th) -(Tl))/(Th)
(1/Do) + (1/Di) = (1/f)
FV

40. formula for efficiency of a heat engine using work out
deltaU = deltaQ + deltaW
(Wnet)/(Qin)
no heat flow
G M/((d/2)^2)

41. radius of curvature of a charged particle as it enters a uniform magnetic field
hc/wavelength
((Qin) -(Qout))/(Qin)
.5mV^2 + .5KA^2
m(v^2)/qvB

42. equation of continuity
(hc/wavelength)=h(Fo) +(Vs)
E/B
1/4wavelength
AV=(A2)(V2)

43. formula for impulse involving momentum
1/2wavelength
mV -m(Vo)
roegh
-KA

44. heat required to change temperature of a substance
joules/second
roegh
MC(deltaT)
.5CV^2 or .5 Q^2/C or .5QV

45. velocity of a molecule of gas
sqrt(3KT/m)
constant pressure
G M/((d/2)^2)
VI

46. focal length of a mirror with radius d
2Pi * sqrt(l/g)
BLv
d/2
dSintheta=mwavelength

47. force of friction
(N2)/(N1)
AV=(A2)(V2)
(Fn)(mu)
mgCostheta(mu)d

48. isobaric
constant pressure
(3/2)nRdeltaT
(Fn)(mu)
qrB/m

49. force a charge in a Bfield
inelastic collision
qVB
2Pi * sqrt(l/g)
sqrt(T/(m/))

50. formula for finding the momentum of a photon
roeVg
h(Fo)
(I^2)RT
h/wavelength