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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. electric potential a distance r from a charge
BA
V+IR
KQ/r
FV

2. second kinematic
V+IR
delta x = (Vo)t + .5at^2
2Pi * sqrt(l/g)
(Patm) + (Pgauge)

3. adibatic
dSintheta=mwavelength
sqrt(3KT/m)
no heat flow
V+IR

4. formula for critical angle
(3/2)nRdeltaT
(N2)/(N1)
deltaU = deltaQ + deltaW
no heat flow

5. formula for buoyant force
VI
roeVg
qV
FV

6. formula for finding magnetic flux
nSintheta=nsintheta
BA
no temp change
-KA

7. formula for charge stored in a capciator
k|Q|/r^2
no temp change
h(Fo)
Q=CV

8. hooke's law force of a spring
pL/A
K |q||Q|/r^2
-KA
AV=(A2)(V2)

9. isobaric
G M/((d/2)^2)
mV -m(Vo)
constant pressure
GM*M/(r^2)

10. radius of curvature of a charged particle as it enters a uniform magnetic field
AV=(A2)(V2)
qE
V+IR
m(v^2)/qvB

11. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
pL/A
.5mV^2 + .5KA^2
0

12. formula for finding the magnetic field a distance r from a current carrying wire
(EMF)Rt/10
MC(deltaT)
KI/r
(Wnet)/(Qin)

13. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
(Fn)(mu)
1/4wavelength
no temp change

14. natural frequency of an open tube of length L
(I^2)RT
1/2wavelength
.5CV^2 or .5 Q^2/C or .5QV
(No)(wavelength)=(Nn)(new wavelength)

15. formula for impluse involving time
(1/Do) + (1/Di) = (1/f)
(hc/wavelength)=h(Fo) +(Vs)
(I^2)R
J= Ft

16. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
FV
BA
qV
(EMF)Rt/10

17. new frequency of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
frequency never changes for light problems
Q=CV
qVB

18. heat during a cyclic process (net heat)
no heat flow
deltaU -deltaW
M(Lf)
2Pi * sqrt(l/g)

19. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
net work = delta K
Q=CV
E/B
e=mc^2

20. force of gravity between two objects of mass m
(EMF)Rt/10
GM*M/(r^2)
VI
joules/second

21. isothermal
(Wnet)/(Qin)
1/((1/C)+(1/C)..........)
(Di)/(Do) or (Hi)/(Ho)
no temp change

22. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
joules/second
sqrt(3KT/m)
(Wnet)/(Qin)

23. forgotten power equation
FV
(No)(wavelength)=(Nn)(new wavelength)
.5KA^2
dSintheta=mwavelength

24. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
BLv
AV=(A2)(V2)
(Wnet)/(Qin)
qV

25. formula for centripetal acceleration
constant volume
M(Lf)
(V^2)/r
V+IR

26. what direction is friction?
opposite motion
inelastic collision
sqrt(T/(m/))
VI

27. force a charge in a Bfield
net work = delta K
qVB
nSintheta=nsintheta
(Fn)(mu)

28. formula to find the absoluate pressure at the bottom of a pool
(V^2)/R
(Patm) + (Pgauge)
opposite motion
roegh

29. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
KQ/r
KI/r
MC(deltaT)

30. formula for period of a pendulum
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)
qV
2Pi * sqrt(l/g)

31. the force on a charge in an electric field
G M/((d/2)^2)
BLv
(I^2)RT
qE

32. units for voltage other than volts
roeVg
2nt=mwavelength
qVB
Joules/Columb

33. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(1/Do) + (1/Di) = (1/f)
qE
(I^2)RT
qrB/m

34. the electric force between two objects of charge Q
n(Cv)(deltaT)
roeVg
K |q||Q|/r^2
elastic collision

35. force of friction
(Fn)(mu)
BA
delta x = (Vo)t + .5at^2
qVB

36. formula for finding the momentum of a photon
hc/wavelength
h/wavelength
V = (Vo) + at
VI

37. total capacitance of capacitors in series
BA
1/((1/C)+(1/C)..........)
roeVg
h/wavelength

38. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
K |q||Q|/r^2
.5mV^2 + .5KA^2
0
roeVg

39. formula for height of the block (at the start of a pendulum string) in terms of theta and L
k|Q|/r^2
J= Ft
(Wnet)/(Qin)
L -LCostheta

40. heat during an isometric process
qE
J= Ft
n(Cv)(deltaT)
constant pressure

41. resistance of a wire
pL/A
sqrt(3KT/m)
M(Lf)
BLv

42. formula equating energy and mass
((Th) -(Tl))/(Th)
hc/wavelength
1/4wavelength
e=mc^2

43. equation of continuity
h/wavelength
AV=(A2)(V2)
L -LCostheta
(Patm) + (Pgauge)

44. electric field in a distance r from a charge
no force (right hand rule)
(I^2)RT
k|Q|/r^2
roeVg

45. the units of power other than watts
net work = delta K
(3/2)nRdeltaT
joules/second
rF

46. change in internal energy during a cyclic process
perfectly inelastic collision
sqrt(3KT/m)
0
L -LCostheta

47. formula for energy of a spring mass when spring is at maximum displacement
inelastic collision
deltaU -deltaW
V^2=(Vo)^2 +2a*change in x
.5KA^2

48. formula for efficiency of a heat engine using work out
1/((1/C)+(1/C)..........)
.5mV^2 + .5KA^2
Joules/Columb
(Wnet)/(Qin)

49. formula to find the gauge pressure at the bottom of a pool
Columbs/second
constant volume
roegh
nSintheta=nsintheta

50. lens/mirror equation
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2
(1/Do) + (1/Di) = (1/f)
h/wavelength