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AP Physics Formulas

Instructions:

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. electric field in a distance r from a charge
KQ/r
V^2=(Vo)^2 +2a*change in x
J= Ft
k|Q|/r^2

2. formula for height of the block (at the start of a pendulum string) in terms of theta and L
1/4wavelength
net work = delta K
L -LCostheta
elastic collision

3. voltage induced in a rod moving through a uniform magnetic field
0
mgCostheta(mu)d
BLv
inelastic collision

4. formula for period of a pendulum
deltaU = deltaQ + deltaW
KI/r
2Pi * sqrt(l/g)
qE

5. formula for power with current and voltage
VI
k|Q|/r^2
qV
net work = delta K

6. magnification equation
hc/wavelength
frequency never changes for light problems
h(Fo)
(Di)/(Do) or (Hi)/(Ho)

7. force of frction on an incline
mgCostheta(mu)d
mV -m(Vo)
L -LCostheta
no temp change

8. heat required to melt a substance
V = (Vo) + at
(hc/wavelength)=h(Fo) +(Vs)
M(Lf)
0

9. formula equating energy and mass
BLv
e=mc^2
KQ/r
h/mv

10. the units of current other than amps
Columbs/second
GM*M/(r^2)
h/wavelength
opposite motion

11. formula relating voltage and electric field
(I^2)RT
Ed=V
V+IR
n(Cv)(deltaT)

12. isothermal
(I^2)R
V+IR
no temp change
qVB

13. adibatic
KI/r
sqrt(T/(m/))
no heat flow
1/2wavelength

14. formula for finding the work function of a metal if the cutoff frequency is known
(3/2)nRdeltaT
h(Fo)
Joules/Columb
2Pi * sqrt(l/g)

15. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
Ed=V
AV=(A2)(V2)
G M/((d/2)^2)
delta x = (Vo)t + .5at^2

16. the electric force between two objects of charge Q
constant pressure
inelastic collision
K |q||Q|/r^2
elastic collision

17. the units of power other than watts
joules/second
2nt=mwavelength
dSintheta=mwavelength
sqrt(3KT/m)

18. formula for power with Voltage and resistance
(Patm) + (Pgauge)
(Fn)(mu)
sqrt(3KT/m)
(V^2)/R

19. velocity of a molecule of gas
1/2wavelength
sqrt(3KT/m)
(V^2)/R
L -LCostheta

20. force of gravity between two objects of mass m
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
(N2)/(N1)
V+IR

21. forgotten power equation
FV
joules/second
(1/Do) + (1/Di) = (1/f)
(V^2)/r

22. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
h(Fo)
roegh
qV
frequency never changes for light problems

23. formula for change in internal energy in a cosnstat volume PV process
1/4wavelength
.5mV^2 + .5KA^2
roegh
(3/2)nRdeltaT

24. hooke's law force of a spring
-KA
roegh
Ed=V
qrB/m

25. heat required to change temperature of a substance
V+IR
MC(deltaT)
V = (Vo) + at
mV -m(Vo)

26. heat during an isometric process
n(Cv)(deltaT)
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)
qVB

27. formula for constructive interference in a thin membrane with two phase changes
J= Ft
qV
F/A
2nt=mwavelength

28. type of collision where K is conserved
sqrt(T/(m/))
perfectly inelastic collision
m(v^2)/qvB
elastic collision

29. formula for energy of a spring mass when spring is at maximum displacement
elastic collision
.5KA^2
.5CV^2 or .5 Q^2/C or .5QV
pL/A

30. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
V^2=(Vo)^2 +2a*change in x
KQ/r
.5mV^2 + .5KA^2

31. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
roeVg
sqrt(T/(m/))
MC(deltaT)
.5mV^2 + .5KA^2

32. the force on a charge moving parallel to a magnetic field
e=mc^2
no force (right hand rule)
M(Lf)
Joules/Columb

33. radius of curvature of a charged particle as it enters a uniform magnetic field
2Pi * sqrt(l/g)
m(v^2)/qvB
qE
M(Lf)

34. new frequency of light as it enters a new substance
k|Q|/r^2
frequency never changes for light problems
qVB
nSintheta=nsintheta

35. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
.5KA^2
(I^2)RT
V^2=(Vo)^2 +2a*change in x
deltaU -deltaW

36. formula for finding the momentum of a photon
(N2)/(N1)
no force (right hand rule)
h/wavelength
AV=(A2)(V2)

37. focal length of a mirror with radius d
d/2
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
opposite motion

38. 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
no temp change
(EMF)Rt/10
1/2wavelength

39. natural frequency of a closed tube of length L
M(Lf)
k|Q|/r^2
rF
1/4wavelength

40. type of collision where objects stick togerther
qVB
frequency never changes for light problems
perfectly inelastic collision
M(Lf)

41. second kinematic
delta x = (Vo)t + .5at^2
E/B
-KA
deltaU -deltaW

42. equation of continuity
qVB
(EMF)Rt/10
(Fn)(mu)
AV=(A2)(V2)

43. isometric
perfectly inelastic collision
constant volume
KQ/r
(1/Do) + (1/Di) = (1/f)

44. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
-KA
G M/((d/2)^2)
Joules/Columb

45. snells law
dSintheta=mwavelength
MC(deltaT)
nSintheta=nsintheta
roegh

46. first kinematic
(Patm) + (Pgauge)
V = (Vo) + at
VI
G M/((d/2)^2)

47. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
opposite motion
(hc/wavelength)=h(Fo) +(Vs)
(I^2)R
(3/2)nRdeltaT

48. heat during a cyclic process (net heat)
Q=CV
deltaU = deltaQ + deltaW
deltaU -deltaW
(Wnet)/(Qin)

49. formula for power with current and resistance
(Fn)(mu)
GM*M/(r^2)
(I^2)R
Joules/Columb

50. total capacitance of capacitors in series
nSintheta=nsintheta
1/((1/C)+(1/C)..........)
m(v^2)/qvB
no temp change