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AP Physics Formulas

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. formula for impulse involving momentum
qV
mV -m(Vo)
L -LCostheta
pL/A

2. snells law
.5CV^2 or .5 Q^2/C or .5QV
deltaU = deltaQ + deltaW
nSintheta=nsintheta
G M/((d/2)^2)

3. heat during an isometric process
n(Cv)(deltaT)
k|Q|/r^2
Q=CV
V+IR

4. velocity of a molecule of gas
(I^2)RT
KI/r
sqrt(3KT/m)
frequency never changes for light problems

5. formula for charge stored in a capciator
(I^2)RT
m(v^2)/qvB
Q=CV
((Qin) -(Qout))/(Qin)

6. hooke's law force of a spring
((Qin) -(Qout))/(Qin)
-KA
V = (Vo) + at
constant volume

7. formula for finding magnetic flux
Ed=V
BA
((Qin) -(Qout))/(Qin)
MC(deltaT)

8. the electric force between two objects of charge Q
rF
AV=(A2)(V2)
roegh
K |q||Q|/r^2

9. units for voltage other than volts
(Patm) + (Pgauge)
qE
BA
Joules/Columb

10. formula for impluse involving time
AV=(A2)(V2)
V = (Vo) + at
J= Ft
0

11. force of friction
mV -m(Vo)
deltaU -deltaW
(N2)/(N1)
(Fn)(mu)

12. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
VI
qrB/m
h/wavelength

13. EMF of a battery having internal resistance R
V+IR
delta x = (Vo)t + .5at^2
(I^2)RT
mV -m(Vo)

14. formula for finding the work function of a metal if the cutoff frequency is known
nSintheta=nsintheta
no temp change
((Th) -(Tl))/(Th)
h(Fo)

15. work energy theorum
BA
mgCostheta(mu)d
mV -m(Vo)
net work = delta K

16. formula relating voltage and electric field
(1/Do) + (1/Di) = (1/f)
Ed=V
E/B
mgCostheta(mu)d

17. isobaric
rF
h/wavelength
e=mc^2
constant pressure

18. formula for centripetal acceleration
dSintheta=mwavelength
G M/((d/2)^2)
(hc/wavelength)=h(Fo) +(Vs)
(V^2)/r

19. formula for power with Voltage and resistance
roeVg
F/A
J= Ft
(V^2)/R

20. force of gravity between two objects of mass m
((Qin) -(Qout))/(Qin)
GM*M/(r^2)
nSintheta=nsintheta
L -LCostheta

21. adibatic
no heat flow
Columbs/second
(Di)/(Do) or (Hi)/(Ho)
(1/Do) + (1/Di) = (1/f)

22. total capacitance of capacitors in series
mV -m(Vo)
G M/((d/2)^2)
d/2
1/((1/C)+(1/C)..........)

23. resistance of a wire
(Patm) + (Pgauge)
VI
pL/A
d/2

24. isothermal
no temp change
delta x = (Vo)t + .5at^2
mgCostheta(mu)d
V^2=(Vo)^2 +2a*change in x

25. formula for efficiency of a heat engine using work out
mgCostheta(mu)d
frequency never changes for light problems
net work = delta K
(Wnet)/(Qin)

26. formula for constructive interference in a thin membrane with two phase changes
h(Fo)
VI
mV -m(Vo)
2nt=mwavelength

27. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
J= Ft
(Wnet)/(Qin)
(EMF)Rt/10
delta x = (Vo)t + .5at^2

28. voltage induced in a rod moving through a uniform magnetic field
Columbs/second
Joules/Columb
BLv
(Fn)(mu)

29. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
2Pi * sqrt(l/g)
h/wavelength
(I^2)RT
no force (right hand rule)

30. second kinematic
(V^2)/R
delta x = (Vo)t + .5at^2
constant pressure
1/((1/C)+(1/C)..........)

31. what direction is friction?
opposite motion
roeVg
K |q||Q|/r^2
(Wnet)/(Qin)

32. formula for efficiency not using work out
GM*M/(r^2)
V+IR
((Qin) -(Qout))/(Qin)
qVB

33. focal length of a mirror with radius d
(V^2)/R
d/2
Joules/Columb
J= Ft

34. radius of curvature of a charged particle as it enters a uniform magnetic field
pL/A
1/((1/C)+(1/C)..........)
Joules/Columb
m(v^2)/qvB

35. electric potential a distance r from a charge
E/B
pL/A
net work = delta K
KQ/r

36. forgotten power equation
n(Cv)(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
h(Fo)
FV

37. velocity of an electrion as it exitws from the hole
BA
J= Ft
MC(deltaT)
qrB/m

38. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
Q=CV
(N2)/(N1)
-KA

39. new wavelength of light as it enters a new substance
inelastic collision
(EMF)Rt/10
Columbs/second
(No)(wavelength)=(Nn)(new wavelength)

40. heat during a cyclic process (net heat)
deltaU -deltaW
((Th) -(Tl))/(Th)
Joules/Columb
opposite motion

41. formula to find the absoluate pressure at the bottom of a pool
(Di)/(Do) or (Hi)/(Ho)
(Patm) + (Pgauge)
MC(deltaT)
(N2)/(N1)

42. formula for buoyant force
(V^2)/r
qrB/m
roeVg
perfectly inelastic collision

43. formula for finding the momentum of a photon
(N2)/(N1)
.5KA^2
Q=CV
h/wavelength

44. third kinematic
roegh
inelastic collision
M(Lf)
V^2=(Vo)^2 +2a*change in x

45. the force on a charge in an electric field
inelastic collision
(Fn)(mu)
qE
1/((1/C)+(1/C)..........)

46. type of collision where objects stick togerther
F/A
perfectly inelastic collision
Columbs/second
((Qin) -(Qout))/(Qin)

47. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
GM*M/(r^2)
.5mV^2 + .5KA^2
((Th) -(Tl))/(Th)
2Pi * sqrt(l/g)

48. the units of power other than watts
roeVg
(N2)/(N1)
joules/second
KQ/r

49. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
no temp change
frequency never changes for light problems
m(v^2)/qvB

50. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
VI
(3/2)nRdeltaT
.5KA^2
E/B

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AP Physics Formulas

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