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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 charge stored in a capciator
k|Q|/r^2
FV
Q=CV
V = (Vo) + at

2. formula for the wavelength (debroglie wavelength) of a moving particle
(V^2)/r
h/mv
deltaU -deltaW
sqrt(3KT/m)

3. energy stored in a capacitor
nSintheta=nsintheta
(V^2)/r
.5CV^2 or .5 Q^2/C or .5QV
1/2wavelength

4. formula to find the gauge pressure at the bottom of a pool
roegh
no heat flow
(EMF)Rt/10
Q=CV

5. electric field in a distance r from a charge
h(Fo)
(Patm) + (Pgauge)
k|Q|/r^2
frequency never changes for light problems

6. forgotten power equation
(hc/wavelength)=h(Fo) +(Vs)
FV
nSintheta=nsintheta
mV -m(Vo)

7. heat required to melt a substance
M(Lf)
no heat flow
no temp change
(Fn)(mu)

8. type of collision where objects stick togerther
1/((1/C)+(1/C)..........)
perfectly inelastic collision
(V^2)/R
KQ/r

9. what direction is friction?
opposite motion
deltaU = deltaQ + deltaW
J= Ft
1/2wavelength

10. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
2nt=mwavelength
Joules/Columb
dSintheta=mwavelength

11. formula for period of a pendulum
k|Q|/r^2
2Pi * sqrt(l/g)
qVB
Joules/Columb

12. the electric force between two objects of charge Q
dSintheta=mwavelength
mV -m(Vo)
K |q||Q|/r^2
V = (Vo) + at

13. heat required to change temperature of a substance
MC(deltaT)
.5mV^2 + .5KA^2
Q=CV
e=mc^2

14. force of friction
(Fn)(mu)
GM*M/(r^2)
dSintheta=mwavelength
qVB

15. adibatic
no heat flow
L -LCostheta
(N2)/(N1)
BLv

16. hooke's law force of a spring
(Di)/(Do) or (Hi)/(Ho)
(Fn)(mu)
-KA
perfectly inelastic collision

17. force of gravity between two objects of mass m
opposite motion
constant volume
(No)(wavelength)=(Nn)(new wavelength)
GM*M/(r^2)

18. electric potential a distance r from a charge
deltaU = deltaQ + deltaW
opposite motion
KQ/r
sqrt(T/(m/))

19. formula for critical angle
h(Fo)
(I^2)RT
delta x = (Vo)t + .5at^2
(N2)/(N1)

20. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(Patm) + (Pgauge)
G M/((d/2)^2)
(Fn)(mu)
k|Q|/r^2

21. third kinematic
V^2=(Vo)^2 +2a*change in x
FV
qV
mgCostheta(mu)d

22. formula for buoyant force
roeVg
VI
KQ/r
E/B

23. formula for power with Voltage and resistance
E/B
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2
(V^2)/R

24. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
BLv
F/A
E/B
elastic collision

25. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
constant volume
(No)(wavelength)=(Nn)(new wavelength)
m(v^2)/qvB

26. pressure
opposite motion
joules/second
h/mv
F/A

27. lens/mirror equation
V+IR
deltaU -deltaW
mgCostheta(mu)d
(1/Do) + (1/Di) = (1/f)

28. formula for efficiency not using work out
1/((1/C)+(1/C)..........)
h(Fo)
pL/A
((Qin) -(Qout))/(Qin)

29. formula relating voltage and electric field
.5KA^2
(N2)/(N1)
Ed=V
KQ/r

30. voltage induced in a rod moving through a uniform magnetic field
mV -m(Vo)
BLv
1/((1/C)+(1/C)..........)
opposite motion

31. formula for finding the magnetic field a distance r from a current carrying wire
(Patm) + (Pgauge)
KI/r
constant volume
qV

32. heat during a cyclic process (net heat)
no force (right hand rule)
(3/2)nRdeltaT
deltaU -deltaW
qV

33. formula for finding the work function of a metal if the cutoff frequency is known
constant pressure
h(Fo)
MC(deltaT)
k|Q|/r^2

34. force of frction on an incline
qVB
mgCostheta(mu)d
hc/wavelength
.5KA^2

35. formula to find the absoluate pressure at the bottom of a pool
net work = delta K
(Patm) + (Pgauge)
(EMF)Rt/10
constant volume

36. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
.5KA^2
E/B
elastic collision

37. velocity of a molecule of gas
d/2
sqrt(3KT/m)
2Pi * sqrt(l/g)
V+IR

38. formula for Carnot efficiency
Columbs/second
((Th) -(Tl))/(Th)
Q=CV
m(v^2)/qvB

39. formula for impluse involving time
(No)(wavelength)=(Nn)(new wavelength)
h(Fo)
(N2)/(N1)
J= Ft

40. formula for energy of a spring mass when spring is at maximum displacement
roeVg
V = (Vo) + at
Ed=V
.5KA^2

41. total capacitance of capacitors in series
qVB
((Th) -(Tl))/(Th)
1/((1/C)+(1/C)..........)
VI

42. new wavelength of light as it enters a new substance
h/wavelength
h(Fo)
mgCostheta(mu)d
(No)(wavelength)=(Nn)(new wavelength)

43. radius of curvature of a charged particle as it enters a uniform magnetic field
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
k|Q|/r^2
m(v^2)/qvB

44. velocity of an electrion as it exitws from the hole
1/((1/C)+(1/C)..........)
no force (right hand rule)
qrB/m
E/B

45. isometric
constant volume
(V^2)/R
-KA
h/mv

46. formula for finding magnetic flux
V^2=(Vo)^2 +2a*change in x
BA
constant pressure
G M/((d/2)^2)

47. velocity of waves on a string if tension is known
AV=(A2)(V2)
mgCostheta(mu)d
KI/r
sqrt(T/(m/))

48. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
Ed=V
(I^2)RT
roeVg
pL/A

49. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
(EMF)Rt/10
sqrt(3KT/m)
2nt=mwavelength

50. the force on a charge moving parallel to a magnetic field
V = (Vo) + at
no force (right hand rule)
(I^2)RT
E/B

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AP Physics Formulas

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