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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. formula for torque
.5KA^2
(Fn)(mu)
rF
joules/second

2. total capacitance of capacitors in series
mV -m(Vo)
(V^2)/R
(hc/wavelength)=h(Fo) +(Vs)
1/((1/C)+(1/C)..........)

3. velocity of an electrion as it exitws from the hole
m(v^2)/qvB
F/A
K |q||Q|/r^2
qrB/m

4. radius of curvature of a charged particle as it enters a uniform magnetic field
frequency never changes for light problems
m(v^2)/qvB
qVB
1/((1/C)+(1/C)..........)

5. voltage induced in a rod moving through a uniform magnetic field
(Fn)(mu)
hc/wavelength
BLv
joules/second

6. formula equating energy and mass
opposite motion
e=mc^2
qVB
V = (Vo) + at

7. energy of a photon if wavelength is known
joules/second
mgCostheta(mu)d
hc/wavelength
roeVg

8. natural frequency of a closed tube of length L
(N2)/(N1)
h/mv
net work = delta K
1/4wavelength

9. force a charge in a Bfield
0
qVB
mV -m(Vo)
-KA

10. equation for the first law of thermodynamics
k|Q|/r^2
n(Cv)(deltaT)
deltaU = deltaQ + deltaW
E/B

11. the units of current other than amps
frequency never changes for light problems
V^2=(Vo)^2 +2a*change in x
FV
Columbs/second

12. the electric force between two objects of charge Q
deltaU -deltaW
K |q||Q|/r^2
(hc/wavelength)=h(Fo) +(Vs)
qE

13. force of gravity between two objects of mass m
roegh
(N2)/(N1)
no heat flow
GM*M/(r^2)

14. third kinematic
V^2=(Vo)^2 +2a*change in x
1/2wavelength
h/wavelength
frequency never changes for light problems

15. lens/mirror equation
.5mV^2 + .5KA^2
((Qin) -(Qout))/(Qin)
(1/Do) + (1/Di) = (1/f)
1/((1/C)+(1/C)..........)

16. forgotten power equation
V+IR
(I^2)R
FV
delta x = (Vo)t + .5at^2

17. first kinematic
(No)(wavelength)=(Nn)(new wavelength)
V = (Vo) + at
(Fn)(mu)
perfectly inelastic collision

18. formula for buoyant force
2nt=mwavelength
d/2
E/B
roeVg

19. formula to find the gauge pressure at the bottom of a pool
no heat flow
roegh
BLv
n(Cv)(deltaT)

20. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
delta x = (Vo)t + .5at^2
(I^2)R
G M/((d/2)^2)
h/mv

21. new frequency of light as it enters a new substance
deltaU -deltaW
e=mc^2
h/mv
frequency never changes for light problems

22. work energy theorum
deltaU = deltaQ + deltaW
net work = delta K
frequency never changes for light problems
qrB/m

23. what direction is friction?
m(v^2)/qvB
AV=(A2)(V2)
opposite motion
M(Lf)

24. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
m(v^2)/qvB
h/wavelength
F/A

25. new wavelength of light as it enters a new substance
joules/second
deltaU = deltaQ + deltaW
(No)(wavelength)=(Nn)(new wavelength)
n(Cv)(deltaT)

26. velocity of waves on a string if tension is known
elastic collision
sqrt(T/(m/))
(Fn)(mu)
((Qin) -(Qout))/(Qin)

27. force of frction on an incline
E/B
VI
1/4wavelength
mgCostheta(mu)d

28. formula for efficiency not using work out
F/A
((Th) -(Tl))/(Th)
GM*M/(r^2)
((Qin) -(Qout))/(Qin)

29. the force on a charge in an electric field
qE
(3/2)nRdeltaT
frequency never changes for light problems
F/A

30. type of collision where K is not conserved
(Patm) + (Pgauge)
joules/second
inelastic collision
BLv

31. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
1/((1/C)+(1/C)..........)
elastic collision
.5mV^2 + .5KA^2
MC(deltaT)

32. focal length of a mirror with radius d
.5KA^2
d/2
1/2wavelength
sqrt(3KT/m)

33. formula for finding the work function of a metal if the cutoff frequency is known
Ed=V
(Wnet)/(Qin)
qVB
h(Fo)

34. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
e=mc^2
KQ/r
qV
(Patm) + (Pgauge)

35. the units of power other than watts
VI
(I^2)RT
joules/second
k|Q|/r^2

36. adibatic
AV=(A2)(V2)
deltaU -deltaW
no heat flow
(V^2)/R

37. type of collision where objects stick togerther
perfectly inelastic collision
Ed=V
1/2wavelength
nSintheta=nsintheta

38. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
-KA
0
h/mv

39. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
no temp change
1/4wavelength
BA

40. formula for Carnot efficiency
inelastic collision
e=mc^2
KQ/r
((Th) -(Tl))/(Th)

41. electric potential a distance r from a charge
1/4wavelength
KQ/r
V^2=(Vo)^2 +2a*change in x
Joules/Columb

42. formula for impulse involving momentum
mV -m(Vo)
pL/A
dSintheta=mwavelength
nSintheta=nsintheta

43. heat during an isometric process
n(Cv)(deltaT)
GM*M/(r^2)
1/((1/C)+(1/C)..........)
(N2)/(N1)

44. formula relating voltage and electric field
qVB
Ed=V
VI
.5KA^2

45. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
F/A
dSintheta=mwavelength
h(Fo)

46. energy stored in a capacitor
roegh
.5CV^2 or .5 Q^2/C or .5QV
dSintheta=mwavelength
BA

47. formula for finding the momentum of a photon
constant pressure
M(Lf)
h/wavelength
(I^2)RT

48. natural frequency of an open tube of length L
K |q||Q|/r^2
1/2wavelength
net work = delta K
deltaU = deltaQ + deltaW

49. formula for power with current and voltage
G M/((d/2)^2)
net work = delta K
VI
qE

50. second kinematic
E/B
delta x = (Vo)t + .5at^2
roeVg
h/wavelength