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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. energy stored in a capacitor
Ed=V
-KA
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2

2. formula for efficiency of a heat engine using work out
(I^2)R
(Wnet)/(Qin)
no force (right hand rule)
k|Q|/r^2

3. formula for finding magnetic flux
Columbs/second
BA
((Qin) -(Qout))/(Qin)
V^2=(Vo)^2 +2a*change in x

4. isothermal
no temp change
qV
h/mv
VI

5. forgotten power equation
d/2
G M/((d/2)^2)
KQ/r
FV

6. formula for constructive interference in a diffraction grating
qrB/m
hc/wavelength
dSintheta=mwavelength
(Fn)(mu)

7. units for voltage other than volts
Joules/Columb
(I^2)RT
delta x = (Vo)t + .5at^2
pL/A

8. force of gravity between two objects of mass m
GM*M/(r^2)
2nt=mwavelength
opposite motion
pL/A

9. 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
(I^2)RT
(Wnet)/(Qin)
(Fn)(mu)

10. hooke's law force of a spring
-KA
qE
Q=CV
inelastic collision

11. formula for torque
VI
rF
1/2wavelength
((Qin) -(Qout))/(Qin)

12. type of collision where K is conserved
MC(deltaT)
frequency never changes for light problems
opposite motion
elastic collision

13. snells law
nSintheta=nsintheta
AV=(A2)(V2)
(I^2)R
no heat flow

14. formula for buoyant force
delta x = (Vo)t + .5at^2
(V^2)/R
VI
roeVg

15. energy of a photon if wavelength is known
(Fn)(mu)
hc/wavelength
perfectly inelastic collision
(V^2)/R

16. third kinematic
(No)(wavelength)=(Nn)(new wavelength)
V^2=(Vo)^2 +2a*change in x
(3/2)nRdeltaT
k|Q|/r^2

17. formula for impluse involving time
L -LCostheta
J= Ft
qrB/m
1/2wavelength

18. the force on a charge in an electric field
KQ/r
1/((1/C)+(1/C)..........)
qE
hc/wavelength

19. formula to find the absoluate pressure at the bottom of a pool
h/mv
(I^2)R
1/4wavelength
(Patm) + (Pgauge)

20. velocity of a molecule of gas
roegh
(Wnet)/(Qin)
sqrt(3KT/m)
constant pressure

21. formula for power with current and voltage
Q=CV
no heat flow
VI
qE

22. pressure
(Fn)(mu)
2nt=mwavelength
net work = delta K
F/A

23. new frequency of light as it enters a new substance
2Pi * sqrt(l/g)
Joules/Columb
(Patm) + (Pgauge)
frequency never changes for light problems

24. lens/mirror equation
MC(deltaT)
n(Cv)(deltaT)
(1/Do) + (1/Di) = (1/f)
2nt=mwavelength

25. formula to find the gauge pressure at the bottom of a pool
delta x = (Vo)t + .5at^2
V+IR
sqrt(T/(m/))
roegh

26. resistance of a wire
-KA
constant pressure
e=mc^2
pL/A

27. type of collision where K is not conserved
dSintheta=mwavelength
inelastic collision
(V^2)/R
qVB

28. natural frequency of a closed tube of length L
L -LCostheta
1/4wavelength
opposite motion
qVB

29. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
deltaU = deltaQ + deltaW
E/B
delta x = (Vo)t + .5at^2
K |q||Q|/r^2

30. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
perfectly inelastic collision
m(v^2)/qvB
joules/second

31. equation of continuity
qVB
AV=(A2)(V2)
(No)(wavelength)=(Nn)(new wavelength)
KQ/r

32. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
KQ/r
perfectly inelastic collision
V^2=(Vo)^2 +2a*change in x

33. formula for period of a pendulum
(EMF)Rt/10
M(Lf)
2Pi * sqrt(l/g)
roegh

34. type of collision where objects stick togerther
(hc/wavelength)=h(Fo) +(Vs)
(I^2)RT
perfectly inelastic collision
m(v^2)/qvB

35. formula for energy of a spring mass when spring is at maximum displacement
KI/r
(N2)/(N1)
.5KA^2
MC(deltaT)

36. formula for finding the magnetic field a distance r from a current carrying wire
(Di)/(Do) or (Hi)/(Ho)
frequency never changes for light problems
KI/r
K |q||Q|/r^2

37. force of frction on an incline
BA
rF
.5KA^2
mgCostheta(mu)d

38. electric potential a distance r from a charge
V = (Vo) + at
KQ/r
-KA
mV -m(Vo)

39. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
no heat flow
(V^2)/R
.5mV^2 + .5KA^2

40. formula for finding the momentum of a photon
(Wnet)/(Qin)
hc/wavelength
h/wavelength
frequency never changes for light problems

41. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
d/2
Columbs/second
mV -m(Vo)

42. force a charge in a Bfield
qVB
no temp change
h/wavelength
(V^2)/r

43. work energy theorum
net work = delta K
BA
m(v^2)/qvB
G M/((d/2)^2)

44. what direction is friction?
1/4wavelength
qE
opposite motion
n(Cv)(deltaT)

45. focal length of a mirror with radius d
d/2
M(Lf)
G M/((d/2)^2)
opposite motion

46. the units of power other than watts
h/wavelength
joules/second
opposite motion
sqrt(T/(m/))

47. the units of current other than amps
KI/r
Columbs/second
(I^2)R
Q=CV

48. formula for Carnot efficiency
opposite motion
BA
((Th) -(Tl))/(Th)
Columbs/second

49. voltage induced in a rod moving through a uniform magnetic field
sqrt(3KT/m)
BLv
hc/wavelength
e=mc^2

50. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
GM*M/(r^2)
Joules/Columb
k|Q|/r^2