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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. magnification equation
(Di)/(Do) or (Hi)/(Ho)
J= Ft
2nt=mwavelength
sqrt(T/(m/))

2. electric potential a distance r from a charge
KI/r
h(Fo)
KQ/r
((Qin) -(Qout))/(Qin)

3. heat during a cyclic process (net heat)
-KA
deltaU -deltaW
(V^2)/r
perfectly inelastic collision

4. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
.5KA^2
mgCostheta(mu)d
h/mv

5. force a charge in a Bfield
nSintheta=nsintheta
KQ/r
Joules/Columb
qVB

6. lens/mirror equation
VI
.5mV^2 + .5KA^2
(1/Do) + (1/Di) = (1/f)
V+IR

7. formula for torque
n(Cv)(deltaT)
rF
no force (right hand rule)
V = (Vo) + at

8. focal length of a mirror with radius d
qrB/m
d/2
e=mc^2
((Qin) -(Qout))/(Qin)

9. the force on a charge moving parallel to a magnetic field
sqrt(T/(m/))
perfectly inelastic collision
no force (right hand rule)
constant volume

10. resistance of a wire
sqrt(3KT/m)
pL/A
AV=(A2)(V2)
no force (right hand rule)

11. formula equating energy and mass
constant volume
sqrt(T/(m/))
rF
e=mc^2

12. first kinematic
((Th) -(Tl))/(Th)
(V^2)/R
V = (Vo) + at
1/2wavelength

13. formula for efficiency of a heat engine using work out
1/4wavelength
(Wnet)/(Qin)
(1/Do) + (1/Di) = (1/f)
FV

14. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
h(Fo)
k|Q|/r^2
.5mV^2 + .5KA^2
V^2=(Vo)^2 +2a*change in x

15. isometric
constant volume
qVB
(V^2)/R
hc/wavelength

16. velocity of an electrion as it exitws from the hole
(V^2)/r
Ed=V
qrB/m
mgCostheta(mu)d

17. formula for energy of a spring mass when spring is at maximum displacement
sqrt(3KT/m)
1/4wavelength
qV
.5KA^2

18. force of frction on an incline
(N2)/(N1)
h/mv
mgCostheta(mu)d
inelastic collision

19. the units of current other than amps
opposite motion
Columbs/second
V+IR
deltaU -deltaW

20. equation for the first law of thermodynamics
KQ/r
roeVg
deltaU = deltaQ + deltaW
V+IR

21. formula for period of a pendulum
nSintheta=nsintheta
Ed=V
1/4wavelength
2Pi * sqrt(l/g)

22. new wavelength of light as it enters a new substance
delta x = (Vo)t + .5at^2
m(v^2)/qvB
frequency never changes for light problems
(No)(wavelength)=(Nn)(new wavelength)

23. new frequency of light as it enters a new substance
qVB
BLv
net work = delta K
frequency never changes for light problems

24. voltage induced in a rod moving through a uniform magnetic field
Ed=V
dSintheta=mwavelength
0
BLv

25. units for voltage other than volts
nSintheta=nsintheta
Joules/Columb
K |q||Q|/r^2
h(Fo)

26. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
pL/A

27. heat during an isometric process
Ed=V
n(Cv)(deltaT)
K |q||Q|/r^2
((Qin) -(Qout))/(Qin)

28. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
inelastic collision
AV=(A2)(V2)
hc/wavelength
E/B

29. forgotten power equation
constant pressure
pL/A
(I^2)R
FV

30. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
(1/Do) + (1/Di) = (1/f)

31. formula for power with Voltage and resistance
BLv
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
(V^2)/R

32. type of collision where K is conserved
1/4wavelength
(Fn)(mu)
elastic collision
deltaU -deltaW

33. velocity of waves on a string if tension is known
dSintheta=mwavelength
MC(deltaT)
sqrt(T/(m/))
2Pi * sqrt(l/g)

34. third kinematic
M(Lf)
d/2
perfectly inelastic collision
V^2=(Vo)^2 +2a*change in x

35. force of gravity between two objects of mass m
perfectly inelastic collision
GM*M/(r^2)
V^2=(Vo)^2 +2a*change in x
Columbs/second

36. formula for change in internal energy in a cosnstat volume PV process
((Th) -(Tl))/(Th)
J= Ft
2Pi * sqrt(l/g)
(3/2)nRdeltaT

37. force of friction
qVB
L -LCostheta
inelastic collision
(Fn)(mu)

38. natural frequency of a closed tube of length L
1/4wavelength
k|Q|/r^2
(1/Do) + (1/Di) = (1/f)
rF

39. change in internal energy during a cyclic process
0
BA
1/2wavelength
J= Ft

40. formula relating voltage and electric field
Ed=V
(No)(wavelength)=(Nn)(new wavelength)
E/B
2Pi * sqrt(l/g)

41. 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
1/((1/C)+(1/C)..........)
AV=(A2)(V2)
(I^2)RT

42. formula for buoyant force
AV=(A2)(V2)
2nt=mwavelength
roeVg
0

43. the force on a charge in an electric field
(Di)/(Do) or (Hi)/(Ho)
((Qin) -(Qout))/(Qin)
qE
qVB

44. second kinematic
delta x = (Vo)t + .5at^2
GM*M/(r^2)
h(Fo)
sqrt(3KT/m)

45. energy stored in a capacitor
(Wnet)/(Qin)
.5CV^2 or .5 Q^2/C or .5QV
nSintheta=nsintheta
(N2)/(N1)

46. formula for finding the work function of a metal if the cutoff frequency is known
K |q||Q|/r^2
nSintheta=nsintheta
(I^2)R
h(Fo)

47. hooke's law force of a spring
-KA
V^2=(Vo)^2 +2a*change in x
VI
nSintheta=nsintheta

48. formula for finding the momentum of a photon
qE
(V^2)/r
h/wavelength
constant pressure

49. type of collision where objects stick togerther
perfectly inelastic collision
(V^2)/r
.5mV^2 + .5KA^2
K |q||Q|/r^2

50. equation of continuity
qVB
nSintheta=nsintheta
(hc/wavelength)=h(Fo) +(Vs)
AV=(A2)(V2)