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AP Physics Formulas

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Answer 50 questions in 15 minutes.
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1. formula to find the gauge pressure at the bottom of a pool
roegh
net work = delta K
Q=CV
KI/r

2. work energy theorum
(V^2)/r
pL/A
((Qin) -(Qout))/(Qin)
net work = delta K

3. formula for buoyant force
sqrt(T/(m/))
roeVg
rF
h/mv

4. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
joules/second
deltaU = deltaQ + deltaW
dSintheta=mwavelength

5. snells law
opposite motion
K |q||Q|/r^2
dSintheta=mwavelength
nSintheta=nsintheta

6. units for voltage other than volts
Joules/Columb
AV=(A2)(V2)
(Patm) + (Pgauge)
roegh

7. natural frequency of an open tube of length L
(Patm) + (Pgauge)
nSintheta=nsintheta
1/2wavelength
opposite motion

8. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(I^2)RT
rF
(3/2)nRdeltaT
(EMF)Rt/10

9. equation for the first law of thermodynamics
(Patm) + (Pgauge)
(3/2)nRdeltaT
m(v^2)/qvB
deltaU = deltaQ + deltaW

10. formula relating voltage and electric field
Ed=V
deltaU = deltaQ + deltaW
pL/A
.5CV^2 or .5 Q^2/C or .5QV

11. formula for centripetal acceleration
perfectly inelastic collision
(V^2)/r
E/B
Ed=V

12. formula for efficiency not using work out
(No)(wavelength)=(Nn)(new wavelength)
h/wavelength
0
((Qin) -(Qout))/(Qin)

13. first kinematic
V = (Vo) + at
(V^2)/r
(V^2)/R
h/mv

14. the electric force between two objects of charge Q
KI/r
mgCostheta(mu)d
K |q||Q|/r^2
(V^2)/r

15. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
AV=(A2)(V2)
joules/second
E/B
-KA

16. heat during an isometric process
0
n(Cv)(deltaT)
elastic collision
2nt=mwavelength

17. formula for power with Voltage and resistance
roeVg
qE
no temp change
(V^2)/R

18. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
qrB/m
roeVg
deltaU -deltaW
.5mV^2 + .5KA^2

19. second kinematic
V+IR
qE
h(Fo)
delta x = (Vo)t + .5at^2

20. natural frequency of a closed tube of length L
delta x = (Vo)t + .5at^2
qVB
1/4wavelength
nSintheta=nsintheta

21. formula for Carnot efficiency
((Th) -(Tl))/(Th)
FV
.5KA^2
net work = delta K

22. adibatic
V+IR
(I^2)RT
no heat flow
mgCostheta(mu)d

23. heat during a cyclic process (net heat)
inelastic collision
(I^2)R
deltaU -deltaW
E/B

24. forgotten power equation
pL/A
hc/wavelength
mgCostheta(mu)d
FV

25. equation of continuity
no force (right hand rule)
AV=(A2)(V2)
d/2
h(Fo)

26. force a charge in a Bfield
no temp change
dSintheta=mwavelength
no force (right hand rule)
qVB

27. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
KQ/r
perfectly inelastic collision
K |q||Q|/r^2

28. the force on a charge moving parallel to a magnetic field
V+IR
m(v^2)/qvB
no force (right hand rule)
(Fn)(mu)

29. force of gravity between two objects of mass m
0
GM*M/(r^2)
constant volume
constant pressure

30. magnification equation
E/B
(Di)/(Do) or (Hi)/(Ho)
FV
k|Q|/r^2

31. formula for constructive interference in a thin membrane with two phase changes
k|Q|/r^2
mgCostheta(mu)d
2nt=mwavelength
perfectly inelastic collision

32. the units of current other than amps
(3/2)nRdeltaT
1/((1/C)+(1/C)..........)
d/2
Columbs/second

33. type of collision where K is conserved
d/2
(Di)/(Do) or (Hi)/(Ho)
(Patm) + (Pgauge)
elastic collision

34. energy stored in a capacitor
(Patm) + (Pgauge)
opposite motion
(EMF)Rt/10
.5CV^2 or .5 Q^2/C or .5QV

35. voltage induced in a rod moving through a uniform magnetic field
net work = delta K
1/((1/C)+(1/C)..........)
F/A
BLv

36. formula for finding the work function of a metal if the cutoff frequency is known
V = (Vo) + at
net work = delta K
h(Fo)
sqrt(3KT/m)

37. lens/mirror equation
sqrt(T/(m/))
(1/Do) + (1/Di) = (1/f)
V^2=(Vo)^2 +2a*change in x
k|Q|/r^2

38. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
(hc/wavelength)=h(Fo) +(Vs)
qE
KI/r

39. force of frction on an incline
1/((1/C)+(1/C)..........)
constant volume
mgCostheta(mu)d
Joules/Columb

40. formula for period of a pendulum
(No)(wavelength)=(Nn)(new wavelength)
(N2)/(N1)
deltaU = deltaQ + deltaW
2Pi * sqrt(l/g)

41. velocity of waves on a string if tension is known
mV -m(Vo)
sqrt(T/(m/))
G M/((d/2)^2)
2nt=mwavelength

42. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
Joules/Columb
no heat flow
mgCostheta(mu)d

43. pressure
(V^2)/R
J= Ft
F/A
AV=(A2)(V2)

44. formula for power with current and resistance
h/wavelength
(I^2)R
BA
Ed=V

45. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(I^2)R
(Patm) + (Pgauge)
K |q||Q|/r^2
(hc/wavelength)=h(Fo) +(Vs)

46. formula equating energy and mass
nSintheta=nsintheta
J= Ft
net work = delta K
e=mc^2

47. formula for power with current and voltage
(Patm) + (Pgauge)
delta x = (Vo)t + .5at^2
GM*M/(r^2)
VI

48. the units of power other than watts
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
joules/second
F/A

49. formula for finding the magnetic field a distance r from a current carrying wire
(I^2)RT
(hc/wavelength)=h(Fo) +(Vs)
KI/r
0

50. energy of a photon if wavelength is known
qE
1/4wavelength
(3/2)nRdeltaT
hc/wavelength

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AP Physics Formulas

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