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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. formula for buoyant force
roeVg
h/mv
h(Fo)
(3/2)nRdeltaT

2. velocity of an electrion as it exitws from the hole
Joules/Columb
no temp change
qrB/m
constant pressure

3. formula for constructive interference in a diffraction grating
0
dSintheta=mwavelength
no force (right hand rule)
no heat flow

4. energy stored in a capacitor
nSintheta=nsintheta
.5CV^2 or .5 Q^2/C or .5QV
Columbs/second
VI

5. adibatic
Q=CV
1/((1/C)+(1/C)..........)
no heat flow
2Pi * sqrt(l/g)

6. pressure
F/A
-KA
AV=(A2)(V2)
BLv

7. natural frequency of an open tube of length L
((Th) -(Tl))/(Th)
inelastic collision
1/2wavelength
Joules/Columb

8. natural frequency of a closed tube of length L
h/wavelength
h/mv
(I^2)RT
1/4wavelength

9. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
-KA
1/((1/C)+(1/C)..........)
E/B
joules/second

10. third kinematic
Ed=V
1/((1/C)+(1/C)..........)
V^2=(Vo)^2 +2a*change in x
no temp change

11. type of collision where objects stick togerther
perfectly inelastic collision
inelastic collision
rF
mgCostheta(mu)d

12. formula for finding the momentum of a photon
BA
h/wavelength
elastic collision
(I^2)R

13. formula for impulse involving momentum
mV -m(Vo)
V = (Vo) + at
(3/2)nRdeltaT
roeVg

14. formula for charge stored in a capciator
Q=CV
qrB/m
constant pressure
(Di)/(Do) or (Hi)/(Ho)

15. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
qE
(hc/wavelength)=h(Fo) +(Vs)
Columbs/second
.5mV^2 + .5KA^2

16. formula for efficiency of a heat engine using work out
-KA
(Wnet)/(Qin)
constant volume
(hc/wavelength)=h(Fo) +(Vs)

17. formula for finding the magnetic field a distance r from a current carrying wire
M(Lf)
1/4wavelength
KI/r
d/2

18. electric potential a distance r from a charge
qE
KQ/r
delta x = (Vo)t + .5at^2
inelastic collision

19. heat required to melt a substance
M(Lf)
Ed=V
no force (right hand rule)
-KA

20. type of collision where K is conserved
elastic collision
Joules/Columb
deltaU = deltaQ + deltaW
(3/2)nRdeltaT

21. new frequency of light as it enters a new substance
d/2
AV=(A2)(V2)
.5CV^2 or .5 Q^2/C or .5QV
frequency never changes for light problems

22. formula for finding magnetic flux
(V^2)/R
(Di)/(Do) or (Hi)/(Ho)
Q=CV
BA

23. formula for constructive interference in a thin membrane with two phase changes
(V^2)/R
qVB
2nt=mwavelength
hc/wavelength

24. velocity of a molecule of gas
L -LCostheta
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW
sqrt(3KT/m)

25. hooke's law force of a spring
-KA
e=mc^2
h/wavelength
F/A

26. formula for impluse involving time
d/2
pL/A
J= Ft
.5KA^2

27. energy of a photon if wavelength is known
MC(deltaT)
1/((1/C)+(1/C)..........)
(No)(wavelength)=(Nn)(new wavelength)
hc/wavelength

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
(EMF)Rt/10
deltaU -deltaW
qV
hc/wavelength

29. type of collision where K is not conserved
VI
inelastic collision
-KA
sqrt(T/(m/))

30. resistance of a wire
Q=CV
pL/A
G M/((d/2)^2)
BA

31. second kinematic
.5CV^2 or .5 Q^2/C or .5QV
delta x = (Vo)t + .5at^2
perfectly inelastic collision
BLv

32. lens/mirror equation
.5CV^2 or .5 Q^2/C or .5QV
KI/r
qE
(1/Do) + (1/Di) = (1/f)

33. velocity of waves on a string if tension is known
sqrt(T/(m/))
elastic collision
F/A
(Di)/(Do) or (Hi)/(Ho)

34. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
1/4wavelength
F/A
KI/r
(EMF)Rt/10

35. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
roegh
BLv
k|Q|/r^2

36. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
net work = delta K
roegh
V+IR

37. heat required to change temperature of a substance
perfectly inelastic collision
MC(deltaT)
sqrt(3KT/m)
joules/second

38. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
roegh
(I^2)RT
perfectly inelastic collision
0

39. formula for power with current and voltage
(V^2)/R
VI
perfectly inelastic collision
mgCostheta(mu)d

40. force of friction
1/2wavelength
(Fn)(mu)
0
.5CV^2 or .5 Q^2/C or .5QV

41. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
Joules/Columb
.5KA^2
(I^2)R

42. formula to find the gauge pressure at the bottom of a pool
1/((1/C)+(1/C)..........)
k|Q|/r^2
roegh
1/4wavelength

43. formula for torque
Ed=V
V+IR
delta x = (Vo)t + .5at^2
rF

44. forgotten power equation
((Qin) -(Qout))/(Qin)
V+IR
perfectly inelastic collision
FV

45. snells law
e=mc^2
frequency never changes for light problems
nSintheta=nsintheta
(V^2)/r

46. heat during a cyclic process (net heat)
roegh
deltaU -deltaW
K |q||Q|/r^2
qE

47. the force on a charge moving parallel to a magnetic field
(Fn)(mu)
no force (right hand rule)
VI
M(Lf)

48. radius of curvature of a charged particle as it enters a uniform magnetic field
2Pi * sqrt(l/g)
1/4wavelength
1/((1/C)+(1/C)..........)
m(v^2)/qvB

49. isobaric
Q=CV
elastic collision
constant pressure
(No)(wavelength)=(Nn)(new wavelength)

50. force a charge in a Bfield
joules/second
qVB
(No)(wavelength)=(Nn)(new wavelength)
J= Ft