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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. equation for the first law of thermodynamics
((Th) -(Tl))/(Th)
(V^2)/R
sqrt(T/(m/))
deltaU = deltaQ + deltaW

2. formula for Carnot efficiency
roegh
V = (Vo) + at
(V^2)/r
((Th) -(Tl))/(Th)

3. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
FV
(V^2)/r
(EMF)Rt/10
Q=CV

4. velocity of a molecule of gas
sqrt(3KT/m)
KQ/r
hc/wavelength
dSintheta=mwavelength

5. formula for constructive interference in a thin membrane with two phase changes
h/mv
2nt=mwavelength
V+IR
constant volume

6. heat required to melt a substance
M(Lf)
inelastic collision
KI/r
L -LCostheta

7. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
(EMF)Rt/10
1/((1/C)+(1/C)..........)
.5CV^2 or .5 Q^2/C or .5QV

8. lens/mirror equation
1/4wavelength
(Patm) + (Pgauge)
G M/((d/2)^2)
(1/Do) + (1/Di) = (1/f)

9. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(Wnet)/(Qin)
qV
.5mV^2 + .5KA^2
nSintheta=nsintheta

10. formula relating voltage and electric field
AV=(A2)(V2)
Ed=V
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)

11. formula for power with current and voltage
BLv
(V^2)/R
inelastic collision
VI

12. velocity of an electrion as it exitws from the hole
(Wnet)/(Qin)
qrB/m
(Fn)(mu)
.5mV^2 + .5KA^2

13. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)
(I^2)R
VI

14. natural frequency of an open tube of length L
((Qin) -(Qout))/(Qin)
1/2wavelength
(I^2)R
BA

15. formula for constructive interference in a diffraction grating
rF
dSintheta=mwavelength
k|Q|/r^2
BA

16. force of frction on an incline
(EMF)Rt/10
mgCostheta(mu)d
KQ/r
Columbs/second

17. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
hc/wavelength
perfectly inelastic collision
G M/((d/2)^2)
V = (Vo) + at

18. the electric force between two objects of charge Q
K |q||Q|/r^2
AV=(A2)(V2)
GM*M/(r^2)
.5CV^2 or .5 Q^2/C or .5QV

19. hooke's law force of a spring
no heat flow
(hc/wavelength)=h(Fo) +(Vs)
VI
-KA

20. electric field in a distance r from a charge
qE
k|Q|/r^2
K |q||Q|/r^2
G M/((d/2)^2)

21. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
.5CV^2 or .5 Q^2/C or .5QV
roegh
E/B
qV

22. equation of continuity
AV=(A2)(V2)
hc/wavelength
((Qin) -(Qout))/(Qin)
VI

23. first kinematic
E/B
V = (Vo) + at
(I^2)RT
m(v^2)/qvB

24. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
G M/((d/2)^2)
mV -m(Vo)
V^2=(Vo)^2 +2a*change in x

25. force of friction
(Fn)(mu)
Q=CV
h(Fo)
deltaU = deltaQ + deltaW

26. formula for energy of a spring mass when spring is at maximum displacement
h/mv
(Fn)(mu)
2nt=mwavelength
.5KA^2

27. work energy theorum
V^2=(Vo)^2 +2a*change in x
Joules/Columb
net work = delta K
K |q||Q|/r^2

28. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qE
qV
1/4wavelength
inelastic collision

29. second kinematic
-KA
h/mv
AV=(A2)(V2)
delta x = (Vo)t + .5at^2

30. formula for centripetal acceleration
net work = delta K
(V^2)/r
h/wavelength
d/2

31. isometric
KQ/r
0
V = (Vo) + at
constant volume

32. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
AV=(A2)(V2)
(hc/wavelength)=h(Fo) +(Vs)
(Patm) + (Pgauge)
elastic collision

33. change in internal energy during a cyclic process
0
(Fn)(mu)
roeVg
constant volume

34. force a charge in a Bfield
qVB
L -LCostheta
e=mc^2
nSintheta=nsintheta

35. isothermal
mgCostheta(mu)d
GM*M/(r^2)
Columbs/second
no temp change

36. the force on a charge in an electric field
h(Fo)
BLv
qE
no force (right hand rule)

37. type of collision where K is not conserved
K |q||Q|/r^2
(3/2)nRdeltaT
inelastic collision
qVB

38. formula equating energy and mass
(hc/wavelength)=h(Fo) +(Vs)
mgCostheta(mu)d
e=mc^2
m(v^2)/qvB

39. formula to find the gauge pressure at the bottom of a pool
deltaU -deltaW
Columbs/second
roegh
(3/2)nRdeltaT

40. the units of power other than watts
joules/second
GM*M/(r^2)
Q=CV
.5mV^2 + .5KA^2

41. natural frequency of a closed tube of length L
Q=CV
1/4wavelength
sqrt(3KT/m)
KQ/r

42. energy of a photon if wavelength is known
deltaU -deltaW
delta x = (Vo)t + .5at^2
(N2)/(N1)
hc/wavelength

43. formula for change in internal energy in a cosnstat volume PV process
d/2
(3/2)nRdeltaT
h(Fo)
h/wavelength

44. what direction is friction?
KI/r
opposite motion
(3/2)nRdeltaT
V = (Vo) + at

45. formula for finding the momentum of a photon
qrB/m
1/2wavelength
dSintheta=mwavelength
h/wavelength

46. formula for charge stored in a capciator
L -LCostheta
Q=CV
GM*M/(r^2)
((Qin) -(Qout))/(Qin)

47. forgotten power equation
FV
perfectly inelastic collision
inelastic collision
no temp change

48. snells law
nSintheta=nsintheta
Q=CV
(I^2)RT
sqrt(3KT/m)

49. formula for finding the work function of a metal if the cutoff frequency is known
deltaU = deltaQ + deltaW
opposite motion
h(Fo)
roeVg

50. the units of current other than amps
frequency never changes for light problems
V+IR
sqrt(T/(m/))
Columbs/second