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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. forgotten power equation
delta x = (Vo)t + .5at^2
V = (Vo) + at
m(v^2)/qvB
FV

2. natural frequency of a closed tube of length L
1/4wavelength
VI
perfectly inelastic collision
J= Ft

3. snells law
(No)(wavelength)=(Nn)(new wavelength)
nSintheta=nsintheta
1/2wavelength
no temp change

4. hooke's law force of a spring
(1/Do) + (1/Di) = (1/f)
-KA
n(Cv)(deltaT)
rF

5. formula to find the absoluate pressure at the bottom of a pool
d/2
(Patm) + (Pgauge)
1/4wavelength
V = (Vo) + at

6. force a charge in a Bfield
no force (right hand rule)
no heat flow
m(v^2)/qvB
qVB

7. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
no temp change
(Wnet)/(Qin)
(Fn)(mu)

8. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
mV -m(Vo)
nSintheta=nsintheta
(I^2)R

9. formula for centripetal acceleration
qE
KQ/r
(Fn)(mu)
(V^2)/r

10. energy of a photon if wavelength is known
hc/wavelength
2nt=mwavelength
F/A
dSintheta=mwavelength

11. adibatic
no heat flow
e=mc^2
GM*M/(r^2)
F/A

12. formula for power with Voltage and resistance
(V^2)/R
opposite motion
.5mV^2 + .5KA^2
(Wnet)/(Qin)

13. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
mV -m(Vo)
((Th) -(Tl))/(Th)
1/((1/C)+(1/C)..........)
(hc/wavelength)=h(Fo) +(Vs)

14. natural frequency of an open tube of length L
d/2
(V^2)/R
opposite motion
1/2wavelength

15. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
roegh
mgCostheta(mu)d
hc/wavelength
(EMF)Rt/10

16. total capacitance of capacitors in series
.5KA^2
perfectly inelastic collision
1/((1/C)+(1/C)..........)
BLv

17. formula for finding the momentum of a photon
roeVg
h/wavelength
mV -m(Vo)
K |q||Q|/r^2

18. force of friction
KQ/r
1/2wavelength
BLv
(Fn)(mu)

19. what direction is friction?
opposite motion
1/2wavelength
GM*M/(r^2)
roegh

20. focal length of a mirror with radius d
M(Lf)
no heat flow
nSintheta=nsintheta
d/2

21. formula for critical angle
no force (right hand rule)
h/wavelength
(N2)/(N1)
constant volume

22. velocity of waves on a string if tension is known
VI
sqrt(T/(m/))
delta x = (Vo)t + .5at^2
perfectly inelastic collision

23. electric field in a distance r from a charge
mV -m(Vo)
m(v^2)/qvB
k|Q|/r^2
FV

24. lens/mirror equation
MC(deltaT)
0
FV
(1/Do) + (1/Di) = (1/f)

25. formula for period of a pendulum
2Pi * sqrt(l/g)
(N2)/(N1)
0
nSintheta=nsintheta

26. the force on a charge moving parallel to a magnetic field
GM*M/(r^2)
roegh
dSintheta=mwavelength
no force (right hand rule)

27. formula for impluse involving time
delta x = (Vo)t + .5at^2
J= Ft
perfectly inelastic collision
h/mv

28. EMF of a battery having internal resistance R
constant pressure
V+IR
nSintheta=nsintheta
AV=(A2)(V2)

29. heat during a cyclic process (net heat)
.5mV^2 + .5KA^2
KQ/r
deltaU -deltaW
constant volume

30. radius of curvature of a charged particle as it enters a uniform magnetic field
mV -m(Vo)
deltaU = deltaQ + deltaW
0
m(v^2)/qvB

31. formula for power with current and resistance
roegh
(I^2)R
net work = delta K
G M/((d/2)^2)

32. voltage induced in a rod moving through a uniform magnetic field
BLv
net work = delta K
no force (right hand rule)
.5mV^2 + .5KA^2

33. force of frction on an incline
(hc/wavelength)=h(Fo) +(Vs)
(I^2)RT
mgCostheta(mu)d
rF

34. formula for buoyant force
constant volume
roeVg
.5KA^2
KI/r

35. velocity of an electrion as it exitws from the hole
m(v^2)/qvB
2Pi * sqrt(l/g)
qrB/m
((Qin) -(Qout))/(Qin)

36. formula equating energy and mass
1/((1/C)+(1/C)..........)
0
e=mc^2
(No)(wavelength)=(Nn)(new wavelength)

37. heat required to melt a substance
sqrt(T/(m/))
M(Lf)
m(v^2)/qvB
rF

38. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
qrB/m
nSintheta=nsintheta
m(v^2)/qvB

39. formula for torque
rF
qrB/m
2Pi * sqrt(l/g)
qVB

40. formula relating voltage and electric field
-KA
.5KA^2
Ed=V
Columbs/second

41. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
qrB/m
E/B
h/mv
sqrt(3KT/m)

42. force of gravity between two objects of mass m
m(v^2)/qvB
(I^2)R
GM*M/(r^2)
1/2wavelength

43. change in internal energy during a cyclic process
0
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2
frequency never changes for light problems

44. formula for finding magnetic flux
Columbs/second
(Patm) + (Pgauge)
1/4wavelength
BA

45. the units of power other than watts
E/B
joules/second
FV
roeVg

46. isometric
constant volume
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
(3/2)nRdeltaT

47. the units of current other than amps
roegh
opposite motion
Columbs/second
G M/((d/2)^2)

48. type of collision where K is not conserved
0
inelastic collision
sqrt(T/(m/))
.5KA^2

49. equation for the first law of thermodynamics
(V^2)/r
deltaU = deltaQ + deltaW
elastic collision
hc/wavelength

50. magnification equation
1/((1/C)+(1/C)..........)
Q=CV
k|Q|/r^2
(Di)/(Do) or (Hi)/(Ho)