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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. hooke's law force of a spring
d/2
.5mV^2 + .5KA^2
delta x = (Vo)t + .5at^2
-KA

2. energy of a photon if wavelength is known
hc/wavelength
(1/Do) + (1/Di) = (1/f)
m(v^2)/qvB
(I^2)R

3. equation for the first law of thermodynamics
m(v^2)/qvB
delta x = (Vo)t + .5at^2
deltaU = deltaQ + deltaW
no heat flow

4. total capacitance of capacitors in series
2Pi * sqrt(l/g)
1/((1/C)+(1/C)..........)
(1/Do) + (1/Di) = (1/f)
KQ/r

5. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
qV
Columbs/second
.5mV^2 + .5KA^2
d/2

6. focal length of a mirror with radius d
(hc/wavelength)=h(Fo) +(Vs)
d/2
Joules/Columb
(No)(wavelength)=(Nn)(new wavelength)

7. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
2nt=mwavelength
KQ/r
(No)(wavelength)=(Nn)(new wavelength)

8. the units of power other than watts
mV -m(Vo)
joules/second
constant volume
Ed=V

9. formula to find the gauge pressure at the bottom of a pool
(hc/wavelength)=h(Fo) +(Vs)
1/4wavelength
-KA
roegh

10. formula to find the absoluate pressure at the bottom of a pool
mV -m(Vo)
(1/Do) + (1/Di) = (1/f)
h/wavelength
(Patm) + (Pgauge)

11. formula for buoyant force
hc/wavelength
qV
roeVg
qE

12. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
.5KA^2
2nt=mwavelength
V = (Vo) + at

13. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
n(Cv)(deltaT)
nSintheta=nsintheta
FV

14. formula for Carnot efficiency
((Th) -(Tl))/(Th)
((Qin) -(Qout))/(Qin)
no heat flow
constant pressure

15. velocity of a molecule of gas
qV
2nt=mwavelength
sqrt(3KT/m)
constant pressure

16. formula for finding the momentum of a photon
h/wavelength
(Wnet)/(Qin)
k|Q|/r^2
qrB/m

17. type of collision where objects stick togerther
(1/Do) + (1/Di) = (1/f)
perfectly inelastic collision
deltaU = deltaQ + deltaW
hc/wavelength

18. equation of continuity
elastic collision
L -LCostheta
opposite motion
AV=(A2)(V2)

19. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
no temp change
BA
Joules/Columb

20. isothermal
no temp change
0
deltaU -deltaW
L -LCostheta

21. force of gravity between two objects of mass m
GM*M/(r^2)
BA
qrB/m
rF

22. formula for change in internal energy in a cosnstat volume PV process
FV
Joules/Columb
(EMF)Rt/10
(3/2)nRdeltaT

23. voltage induced in a rod moving through a uniform magnetic field
BLv
inelastic collision
no heat flow
((Qin) -(Qout))/(Qin)

24. formula for energy of a spring mass when spring is at maximum displacement
J= Ft
1/4wavelength
.5KA^2
(I^2)R

25. formula equating energy and mass
e=mc^2
constant pressure
2Pi * sqrt(l/g)
MC(deltaT)

26. heat required to melt a substance
elastic collision
(No)(wavelength)=(Nn)(new wavelength)
Q=CV
M(Lf)

27. formula for power with Voltage and resistance
F/A
(V^2)/R
GM*M/(r^2)
frequency never changes for light problems

28. heat during a cyclic process (net heat)
AV=(A2)(V2)
m(v^2)/qvB
opposite motion
deltaU -deltaW

29. new frequency of light as it enters a new substance
perfectly inelastic collision
1/((1/C)+(1/C)..........)
frequency never changes for light problems
no heat flow

30. lens/mirror equation
inelastic collision
(1/Do) + (1/Di) = (1/f)
elastic collision
.5KA^2

31. electric field in a distance r from a charge
joules/second
delta x = (Vo)t + .5at^2
k|Q|/r^2
AV=(A2)(V2)

32. the electric force between two objects of charge Q
GM*M/(r^2)
((Qin) -(Qout))/(Qin)
K |q||Q|/r^2
BA

33. formula for constructive interference in a diffraction grating
perfectly inelastic collision
dSintheta=mwavelength
rF
Columbs/second

34. force a charge in a Bfield
d/2
qE
qVB
dSintheta=mwavelength

35. type of collision where K is not conserved
1/2wavelength
1/((1/C)+(1/C)..........)
inelastic collision
.5mV^2 + .5KA^2

36. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
-KA
(I^2)RT
G M/((d/2)^2)

37. heat during an isometric process
h/mv
n(Cv)(deltaT)
sqrt(T/(m/))
deltaU -deltaW

38. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
VI
.5KA^2
(1/Do) + (1/Di) = (1/f)

39. electric potential a distance r from a charge
KQ/r
(Patm) + (Pgauge)
mV -m(Vo)
((Th) -(Tl))/(Th)

40. second kinematic
((Th) -(Tl))/(Th)
Joules/Columb
net work = delta K
delta x = (Vo)t + .5at^2

41. adibatic
Columbs/second
no heat flow
(No)(wavelength)=(Nn)(new wavelength)
mV -m(Vo)

42. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
(Wnet)/(Qin)
.5mV^2 + .5KA^2
rF

43. formula for critical angle
m(v^2)/qvB
1/((1/C)+(1/C)..........)
(N2)/(N1)
k|Q|/r^2

44. formula for impluse involving time
pL/A
no force (right hand rule)
J= Ft
.5mV^2 + .5KA^2

45. formula relating voltage and electric field
Ed=V
deltaU -deltaW
no temp change
VI

46. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
opposite motion
1/((1/C)+(1/C)..........)
joules/second

47. isobaric
qV
roeVg
constant pressure
V = (Vo) + at

48. natural frequency of an open tube of length L
mV -m(Vo)
K |q||Q|/r^2
1/2wavelength
m(v^2)/qvB

49. isometric
nSintheta=nsintheta
k|Q|/r^2
rF
constant volume

50. formula for period of a pendulum
(No)(wavelength)=(Nn)(new wavelength)
J= Ft
2Pi * sqrt(l/g)
L -LCostheta

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AP Physics Formulas

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