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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. natural frequency of a closed tube of length L
Joules/Columb
1/2wavelength
1/4wavelength
Columbs/second

2. energy stored in a capacitor
h(Fo)
delta x = (Vo)t + .5at^2
.5CV^2 or .5 Q^2/C or .5QV
h/mv

3. heat required to melt a substance
perfectly inelastic collision
AV=(A2)(V2)
M(Lf)
Columbs/second

4. formula for efficiency of a heat engine using work out
GM*M/(r^2)
(EMF)Rt/10
Columbs/second
(Wnet)/(Qin)

5. snells law
nSintheta=nsintheta
Columbs/second
L -LCostheta
(Patm) + (Pgauge)

6. voltage induced in a rod moving through a uniform magnetic field
G M/((d/2)^2)
KI/r
0
BLv

7. equation of continuity
pL/A
AV=(A2)(V2)
opposite motion
frequency never changes for light problems

8. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
1/((1/C)+(1/C)..........)
BA
0
(EMF)Rt/10

9. third kinematic
V^2=(Vo)^2 +2a*change in x
(Patm) + (Pgauge)
(EMF)Rt/10
.5KA^2

10. force of gravity between two objects of mass m
GM*M/(r^2)
roegh
2Pi * sqrt(l/g)
((Th) -(Tl))/(Th)

11. type of collision where K is conserved
(Patm) + (Pgauge)
constant pressure
(3/2)nRdeltaT
elastic collision

12. formula equating energy and mass
deltaU -deltaW
K |q||Q|/r^2
e=mc^2
mgCostheta(mu)d

13. formula to find the gauge pressure at the bottom of a pool
roegh
no heat flow
Q=CV
frequency never changes for light problems

14. heat required to change temperature of a substance
E/B
MC(deltaT)
roegh
deltaU = deltaQ + deltaW

15. formula for power with current and resistance
(3/2)nRdeltaT
(I^2)RT
(I^2)R
Joules/Columb

16. formula for centripetal acceleration
roeVg
(V^2)/r
Joules/Columb
L -LCostheta

17. electric field in a distance r from a charge
-KA
G M/((d/2)^2)
(Di)/(Do) or (Hi)/(Ho)
k|Q|/r^2

18. formula for critical angle
V+IR
(N2)/(N1)
E/B
elastic collision

19. force a charge in a Bfield
qVB
e=mc^2
frequency never changes for light problems
nSintheta=nsintheta

20. isothermal
opposite motion
no temp change
F/A
constant volume

21. formula for impluse involving time
.5CV^2 or .5 Q^2/C or .5QV
rF
J= Ft
BLv

22. the electric force between two objects of charge Q
qE
E/B
K |q||Q|/r^2
k|Q|/r^2

23. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
M(Lf)
Columbs/second
no temp change

24. type of collision where K is not conserved
inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
F/A
(Patm) + (Pgauge)

25. work energy theorum
net work = delta K
h(Fo)
k|Q|/r^2
.5CV^2 or .5 Q^2/C or .5QV

26. formula relating voltage and electric field
Ed=V
sqrt(3KT/m)
h/wavelength
h(Fo)

27. forgotten power equation
((Th) -(Tl))/(Th)
qrB/m
FV
((Qin) -(Qout))/(Qin)

28. formula for Carnot efficiency
nSintheta=nsintheta
K |q||Q|/r^2
((Th) -(Tl))/(Th)
V = (Vo) + at

29. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
(N2)/(N1)
d/2
sqrt(3KT/m)

30. new frequency of light as it enters a new substance
FV
KQ/r
frequency never changes for light problems
(V^2)/R

31. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
.5mV^2 + .5KA^2
(hc/wavelength)=h(Fo) +(Vs)
KI/r

32. formula for buoyant force
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2
roeVg
-KA

33. energy of a photon if wavelength is known
hc/wavelength
net work = delta K
2nt=mwavelength
pL/A

34. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
opposite motion
hc/wavelength
E/B
G M/((d/2)^2)

35. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
hc/wavelength
no temp change
0

36. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
Columbs/second
.5CV^2 or .5 Q^2/C or .5QV
-KA
(hc/wavelength)=h(Fo) +(Vs)

37. formula for power with current and voltage
h/wavelength
deltaU = deltaQ + deltaW
KQ/r
VI

38. resistance of a wire
G M/((d/2)^2)
GM*M/(r^2)
net work = delta K
pL/A

39. formula for change in internal energy in a cosnstat volume PV process
-KA
(3/2)nRdeltaT
J= Ft
nSintheta=nsintheta

40. velocity of an electrion as it exitws from the hole
constant volume
qrB/m
2Pi * sqrt(l/g)
h/mv

41. formula for finding magnetic flux
deltaU = deltaQ + deltaW
BA
sqrt(T/(m/))
hc/wavelength

42. formula for period of a pendulum
h/wavelength
2Pi * sqrt(l/g)
K |q||Q|/r^2
qV

43. second kinematic
delta x = (Vo)t + .5at^2
elastic collision
2nt=mwavelength
d/2

44. formula for finding the momentum of a photon
h/mv
h/wavelength
d/2
qV

45. isobaric
constant pressure
1/4wavelength
rF
constant volume

46. force of frction on an incline
frequency never changes for light problems
mgCostheta(mu)d
VI
1/((1/C)+(1/C)..........)

47. velocity of waves on a string if tension is known
F/A
k|Q|/r^2
.5mV^2 + .5KA^2
sqrt(T/(m/))

48. natural frequency of an open tube of length L
GM*M/(r^2)
MC(deltaT)
joules/second
1/2wavelength

49. lens/mirror equation
qVB
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
no heat flow

50. formula for finding the magnetic field a distance r from a current carrying wire
nSintheta=nsintheta
deltaU = deltaQ + deltaW
KI/r
FV