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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.
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. snells law
opposite motion
Columbs/second
nSintheta=nsintheta
mV -m(Vo)

2. formula for critical angle
(V^2)/R
MC(deltaT)
no heat flow
(N2)/(N1)

3. velocity of waves on a string if tension is known
d/2
h/wavelength
sqrt(T/(m/))
(EMF)Rt/10

4. formula for finding magnetic flux
(EMF)Rt/10
Columbs/second
BA
dSintheta=mwavelength

5. isometric
FV
constant volume
V = (Vo) + at
deltaU -deltaW

6. isobaric
hc/wavelength
roegh
constant pressure
1/((1/C)+(1/C)..........)

7. resistance of a wire
frequency never changes for light problems
pL/A
sqrt(T/(m/))
KQ/r

8. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
qVB
2Pi * sqrt(l/g)
1/((1/C)+(1/C)..........)

9. natural frequency of an open tube of length L
(Di)/(Do) or (Hi)/(Ho)
1/2wavelength
F/A
V^2=(Vo)^2 +2a*change in x

10. hooke's law force of a spring
roegh
-KA
FV
(No)(wavelength)=(Nn)(new wavelength)

11. force of friction
(hc/wavelength)=h(Fo) +(Vs)
n(Cv)(deltaT)
BLv
(Fn)(mu)

12. the force on a charge in an electric field
.5CV^2 or .5 Q^2/C or .5QV
joules/second
Ed=V
qE

13. formula to find the gauge pressure at the bottom of a pool
2nt=mwavelength
hc/wavelength
roegh
k|Q|/r^2

14. change in internal energy during a cyclic process
qrB/m
(V^2)/r
0
(EMF)Rt/10

15. type of collision where K is conserved
elastic collision
(Fn)(mu)
mgCostheta(mu)d
deltaU -deltaW

16. electric potential a distance r from a charge
h/wavelength
n(Cv)(deltaT)
KQ/r
BA

17. equation of continuity
FV
V = (Vo) + at
h/wavelength
AV=(A2)(V2)

18. formula for power with current and voltage
perfectly inelastic collision
1/2wavelength
h/mv
VI

19. velocity of a molecule of gas
sqrt(3KT/m)
(3/2)nRdeltaT
F/A
n(Cv)(deltaT)

20. formula for impluse involving time
.5KA^2
J= Ft
no heat flow
delta x = (Vo)t + .5at^2

21. what direction is friction?
net work = delta K
qrB/m
((Th) -(Tl))/(Th)
opposite motion

22. type of collision where objects stick togerther
perfectly inelastic collision
2nt=mwavelength
Columbs/second
F/A

23. new frequency of light as it enters a new substance
(Patm) + (Pgauge)
frequency never changes for light problems
(I^2)RT
deltaU -deltaW

24. total capacitance of capacitors in series
2nt=mwavelength
1/((1/C)+(1/C)..........)
K |q||Q|/r^2
-KA

25. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
E/B
(Wnet)/(Qin)
.5mV^2 + .5KA^2

26. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
frequency never changes for light problems
-KA
qVB

27. heat required to change temperature of a substance
(hc/wavelength)=h(Fo) +(Vs)
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
MC(deltaT)

28. formula for buoyant force
(No)(wavelength)=(Nn)(new wavelength)
roeVg
MC(deltaT)
((Qin) -(Qout))/(Qin)

29. heat required to melt a substance
h/mv
m(v^2)/qvB
M(Lf)
nSintheta=nsintheta

30. units for voltage other than volts
Joules/Columb
K |q||Q|/r^2
(I^2)R
AV=(A2)(V2)

31. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
Joules/Columb
qV
(Wnet)/(Qin)
FV

32. force of gravity between two objects of mass m
no force (right hand rule)
1/2wavelength
GM*M/(r^2)
nSintheta=nsintheta

33. the units of power other than watts
Q=CV
joules/second
L -LCostheta
KI/r

34. formula for impulse involving momentum
mV -m(Vo)
VI
(Patm) + (Pgauge)
0

35. formula for finding the momentum of a photon
K |q||Q|/r^2
m(v^2)/qvB
h/wavelength
(Patm) + (Pgauge)

36. 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
(V^2)/r
E/B
.5KA^2

37. natural frequency of a closed tube of length L
qVB
1/4wavelength
net work = delta K
-KA

38. new wavelength of light as it enters a new substance
KQ/r
no heat flow
(No)(wavelength)=(Nn)(new wavelength)
BLv

39. voltage induced in a rod moving through a uniform magnetic field
no force (right hand rule)
pL/A
qV
BLv

40. magnification equation
mV -m(Vo)
(Di)/(Do) or (Hi)/(Ho)
deltaU = deltaQ + deltaW
sqrt(3KT/m)

41. formula relating voltage and electric field
Ed=V
2Pi * sqrt(l/g)
deltaU = deltaQ + deltaW
E/B

42. formula for period of a pendulum
.5CV^2 or .5 Q^2/C or .5QV
pL/A
2Pi * sqrt(l/g)
M(Lf)

43. formula for efficiency not using work out
frequency never changes for light problems
roegh
e=mc^2
((Qin) -(Qout))/(Qin)

44. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
GM*M/(r^2)
.5KA^2
M(Lf)

45. first kinematic
V = (Vo) + at
K |q||Q|/r^2
KQ/r
h/wavelength

46. type of collision where K is not conserved
.5KA^2
inelastic collision
roegh
GM*M/(r^2)

47. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
V = (Vo) + at
0
roegh
(EMF)Rt/10

48. adibatic
(N2)/(N1)
(Wnet)/(Qin)
no heat flow
J= Ft

49. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
h/mv
mgCostheta(mu)d
1/((1/C)+(1/C)..........)

50. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
(No)(wavelength)=(Nn)(new wavelength)
dSintheta=mwavelength
V^2=(Vo)^2 +2a*change in x