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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. the force on a charge moving parallel to a magnetic field
E/B
no force (right hand rule)
perfectly inelastic collision
sqrt(T/(m/))

2. new frequency of light as it enters a new substance
AV=(A2)(V2)
.5KA^2
frequency never changes for light problems
MC(deltaT)

3. heat required to change temperature of a substance
(Fn)(mu)
pL/A
deltaU -deltaW
MC(deltaT)

4. voltage induced in a rod moving through a uniform magnetic field
G M/((d/2)^2)
mV -m(Vo)
(V^2)/r
BLv

5. the electric force between two objects of charge Q
inelastic collision
K |q||Q|/r^2
V = (Vo) + at
no temp change

6. force a charge in a Bfield
AV=(A2)(V2)
(1/Do) + (1/Di) = (1/f)
n(Cv)(deltaT)
qVB

7. formula relating voltage and electric field
.5CV^2 or .5 Q^2/C or .5QV
Ed=V
n(Cv)(deltaT)
0

8. formula for finding the momentum of a photon
L -LCostheta
GM*M/(r^2)
hc/wavelength
h/wavelength

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

10. formula for power with Voltage and resistance
V+IR
(V^2)/R
dSintheta=mwavelength
sqrt(T/(m/))

11. formula for finding the work function of a metal if the cutoff frequency is known
hc/wavelength
h(Fo)
VI
MC(deltaT)

12. first kinematic
.5KA^2
no force (right hand rule)
delta x = (Vo)t + .5at^2
V = (Vo) + at

13. the units of power other than watts
joules/second
no temp change
GM*M/(r^2)
delta x = (Vo)t + .5at^2

14. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
Joules/Columb
Columbs/second
E/B
no temp change

15. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qrB/m
qV
E/B
(EMF)Rt/10

16. formula for Carnot efficiency
((Th) -(Tl))/(Th)
K |q||Q|/r^2
L -LCostheta
(I^2)R

17. force of gravity between two objects of mass m
GM*M/(r^2)
K |q||Q|/r^2
G M/((d/2)^2)
KQ/r

18. type of collision where K is not conserved
inelastic collision
((Th) -(Tl))/(Th)
1/2wavelength
Joules/Columb

19. formula equating energy and mass
F/A
m(v^2)/qvB
(No)(wavelength)=(Nn)(new wavelength)
e=mc^2

20. type of collision where objects stick togerther
constant pressure
perfectly inelastic collision
2Pi * sqrt(l/g)
((Qin) -(Qout))/(Qin)

21. new wavelength of light as it enters a new substance
elastic collision
(EMF)Rt/10
(No)(wavelength)=(Nn)(new wavelength)
AV=(A2)(V2)

22. natural frequency of an open tube of length L
E/B
1/2wavelength
m(v^2)/qvB
rF

23. what direction is friction?
opposite motion
2nt=mwavelength
(No)(wavelength)=(Nn)(new wavelength)
KQ/r

24. lens/mirror equation
2Pi * sqrt(l/g)
VI
(1/Do) + (1/Di) = (1/f)
GM*M/(r^2)

25. formula for period of a pendulum
2Pi * sqrt(l/g)
(Wnet)/(Qin)
rF
qV

26. snells law
(3/2)nRdeltaT
nSintheta=nsintheta
(Patm) + (Pgauge)
(EMF)Rt/10

27. total capacitance of capacitors in series
sqrt(T/(m/))
M(Lf)
1/((1/C)+(1/C)..........)
frequency never changes for light problems

28. type of collision where K is conserved
M(Lf)
KQ/r
1/4wavelength
elastic collision

29. formula for power with current and resistance
(I^2)R
KI/r
1/((1/C)+(1/C)..........)
MC(deltaT)

30. formula for height of the block (at the start of a pendulum string) in terms of theta and L
joules/second
sqrt(3KT/m)
dSintheta=mwavelength
L -LCostheta

31. force of frction on an incline
net work = delta K
perfectly inelastic collision
V^2=(Vo)^2 +2a*change in x
mgCostheta(mu)d

32. EMF of a battery having internal resistance R
MC(deltaT)
constant volume
h/mv
V+IR

33. formula for impulse involving momentum
E/B
Ed=V
mV -m(Vo)
inelastic collision

34. focal length of a mirror with radius d
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
d/2
.5CV^2 or .5 Q^2/C or .5QV

35. work energy theorum
deltaU = deltaQ + deltaW
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
net work = delta K

36. energy of a photon if wavelength is known
hc/wavelength
GM*M/(r^2)
V^2=(Vo)^2 +2a*change in x
V+IR

37. electric potential a distance r from a charge
KQ/r
m(v^2)/qvB
mgCostheta(mu)d
(3/2)nRdeltaT

38. formula to find the absoluate pressure at the bottom of a pool
constant volume
Ed=V
(Patm) + (Pgauge)
BLv

39. heat during an isometric process
n(Cv)(deltaT)
net work = delta K
(V^2)/R
AV=(A2)(V2)

40. velocity of a molecule of gas
no force (right hand rule)
roegh
sqrt(3KT/m)
(Patm) + (Pgauge)

41. the units of current other than amps
constant volume
roeVg
(V^2)/R
Columbs/second

42. formula to find the gauge pressure at the bottom of a pool
roegh
deltaU -deltaW
(hc/wavelength)=h(Fo) +(Vs)
mgCostheta(mu)d

43. the force on a charge in an electric field
h(Fo)
qE
e=mc^2
(V^2)/r

44. formula for constructive interference in a thin membrane with two phase changes
(1/Do) + (1/Di) = (1/f)
KI/r
(V^2)/R
2nt=mwavelength

45. formula for buoyant force
qE
(Fn)(mu)
roeVg
h/wavelength

46. formula for efficiency of a heat engine using work out
perfectly inelastic collision
(Wnet)/(Qin)
-KA
opposite motion

47. natural frequency of a closed tube of length L
no temp change
(I^2)R
((Qin) -(Qout))/(Qin)
1/4wavelength

48. magnification equation
(No)(wavelength)=(Nn)(new wavelength)
MC(deltaT)
(I^2)RT
(Di)/(Do) or (Hi)/(Ho)

49. heat during a cyclic process (net heat)
no temp change
2Pi * sqrt(l/g)
2nt=mwavelength
deltaU -deltaW

50. formula for charge stored in a capciator
Q=CV
(Patm) + (Pgauge)
h/wavelength
frequency never changes for light problems

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AP Physics Formulas

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