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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. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
J= Ft
(EMF)Rt/10
elastic collision
m(v^2)/qvB

2. change in internal energy during a cyclic process
1/4wavelength
0
MC(deltaT)
Q=CV

3. formula for efficiency of a heat engine using work out
sqrt(3KT/m)
(Di)/(Do) or (Hi)/(Ho)
(Wnet)/(Qin)
(No)(wavelength)=(Nn)(new wavelength)

4. EMF of a battery having internal resistance R
mgCostheta(mu)d
V+IR
Ed=V
1/2wavelength

5. units for voltage other than volts
Joules/Columb
no force (right hand rule)
(hc/wavelength)=h(Fo) +(Vs)
no heat flow

6. formula for charge stored in a capciator
AV=(A2)(V2)
Q=CV
no temp change
h/mv

7. what direction is friction?
(1/Do) + (1/Di) = (1/f)
Q=CV
opposite motion
delta x = (Vo)t + .5at^2

8. formula to find the absoluate pressure at the bottom of a pool
V^2=(Vo)^2 +2a*change in x
(Patm) + (Pgauge)
Q=CV
h/wavelength

9. the units of power other than watts
joules/second
(No)(wavelength)=(Nn)(new wavelength)
(I^2)R
roegh

10. formula for change in internal energy in a cosnstat volume PV process
constant pressure
(3/2)nRdeltaT
dSintheta=mwavelength
roegh

11. velocity of waves on a string if tension is known
sqrt(T/(m/))
.5KA^2
(Patm) + (Pgauge)
Q=CV

12. isothermal
nSintheta=nsintheta
no temp change
VI
(I^2)RT

13. the units of current other than amps
Ed=V
V+IR
Columbs/second
mV -m(Vo)

14. first kinematic
G M/((d/2)^2)
0
net work = delta K
V = (Vo) + at

15. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
qV
qVB
hc/wavelength

16. the force on a charge in an electric field
G M/((d/2)^2)
qE
h/mv
(N2)/(N1)

17. heat during an isometric process
delta x = (Vo)t + .5at^2
e=mc^2
sqrt(T/(m/))
n(Cv)(deltaT)

18. third kinematic
qVB
no heat flow
qrB/m
V^2=(Vo)^2 +2a*change in x

19. voltage induced in a rod moving through a uniform magnetic field
qE
Joules/Columb
BLv
h/mv

20. radius of curvature of a charged particle as it enters a uniform magnetic field
mV -m(Vo)
AV=(A2)(V2)
.5KA^2
m(v^2)/qvB

21. force a charge in a Bfield
net work = delta K
qVB
1/2wavelength
Joules/Columb

22. formula for centripetal acceleration
perfectly inelastic collision
(V^2)/r
(3/2)nRdeltaT
M(Lf)

23. new frequency of light as it enters a new substance
V^2=(Vo)^2 +2a*change in x
frequency never changes for light problems
AV=(A2)(V2)
(Fn)(mu)

24. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
((Th) -(Tl))/(Th)
frequency never changes for light problems
sqrt(T/(m/))
(hc/wavelength)=h(Fo) +(Vs)

25. the electric force between two objects of charge Q
K |q||Q|/r^2
perfectly inelastic collision
1/((1/C)+(1/C)..........)
V+IR

26. formula for constructive interference in a thin membrane with two phase changes
VI
FV
pL/A
2nt=mwavelength

27. formula for finding the momentum of a photon
h/wavelength
J= Ft
KQ/r
(3/2)nRdeltaT

28. new wavelength of light as it enters a new substance
inelastic collision
1/4wavelength
V^2=(Vo)^2 +2a*change in x
(No)(wavelength)=(Nn)(new wavelength)

29. formula for finding the work function of a metal if the cutoff frequency is known
1/4wavelength
opposite motion
h(Fo)
-KA

30. velocity of an electrion as it exitws from the hole
L -LCostheta
e=mc^2
qrB/m
BA

31. velocity of a molecule of gas
G M/((d/2)^2)
(EMF)Rt/10
h/wavelength
sqrt(3KT/m)

32. isobaric
delta x = (Vo)t + .5at^2
constant pressure
2nt=mwavelength
hc/wavelength

33. second kinematic
.5KA^2
delta x = (Vo)t + .5at^2
no force (right hand rule)
E/B

34. lens/mirror equation
((Th) -(Tl))/(Th)
.5mV^2 + .5KA^2
(1/Do) + (1/Di) = (1/f)
sqrt(T/(m/))

35. formula for power with current and voltage
BLv
inelastic collision
VI
net work = delta K

36. formula for impulse involving momentum
mV -m(Vo)
.5mV^2 + .5KA^2
dSintheta=mwavelength
nSintheta=nsintheta

37. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
GM*M/(r^2)
L -LCostheta
G M/((d/2)^2)
(3/2)nRdeltaT

38. heat required to change temperature of a substance
qrB/m
(I^2)RT
MC(deltaT)
n(Cv)(deltaT)

39. pressure
(V^2)/r
F/A
1/((1/C)+(1/C)..........)
qVB

40. the force on a charge moving parallel to a magnetic field
joules/second
Columbs/second
no force (right hand rule)
VI

41. formula for finding the magnetic field a distance r from a current carrying wire
VI
(Patm) + (Pgauge)
BA
KI/r

42. electric field in a distance r from a charge
qVB
frequency never changes for light problems
.5CV^2 or .5 Q^2/C or .5QV
k|Q|/r^2

43. formula for torque
rF
n(Cv)(deltaT)
delta x = (Vo)t + .5at^2
L -LCostheta

44. adibatic
GM*M/(r^2)
no heat flow
roeVg
((Qin) -(Qout))/(Qin)

45. electric potential a distance r from a charge
KQ/r
constant volume
h/wavelength
BA

46. formula equating energy and mass
G M/((d/2)^2)
e=mc^2
sqrt(T/(m/))
0

47. formula for Carnot efficiency
inelastic collision
((Th) -(Tl))/(Th)
J= Ft
frequency never changes for light problems

48. formula for efficiency not using work out
dSintheta=mwavelength
sqrt(3KT/m)
((Qin) -(Qout))/(Qin)
M(Lf)

49. equation of continuity
k|Q|/r^2
0
M(Lf)
AV=(A2)(V2)

50. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
qVB
KQ/r
((Qin) -(Qout))/(Qin)

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