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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. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
Joules/Columb
qE
constant volume
E/B

2. what direction is friction?
constant pressure
V = (Vo) + at
MC(deltaT)
opposite motion

3. formula for energy of a spring mass when spring is at maximum displacement
roegh
(EMF)Rt/10
BLv
.5KA^2

4. total capacitance of capacitors in series
h/wavelength
1/((1/C)+(1/C)..........)
(I^2)R
(V^2)/r

5. formula for constructive interference in a diffraction grating
qrB/m
dSintheta=mwavelength
Ed=V
F/A

6. the units of power other than watts
qE
joules/second
(Di)/(Do) or (Hi)/(Ho)
mV -m(Vo)

7. formula to find the gauge pressure at the bottom of a pool
V = (Vo) + at
2nt=mwavelength
.5mV^2 + .5KA^2
roegh

8. electric field in a distance r from a charge
(hc/wavelength)=h(Fo) +(Vs)
k|Q|/r^2
K |q||Q|/r^2
dSintheta=mwavelength

9. velocity of waves on a string if tension is known
0
no temp change
sqrt(T/(m/))
frequency never changes for light problems

10. natural frequency of an open tube of length L
((Qin) -(Qout))/(Qin)
(V^2)/R
-KA
1/2wavelength

11. isobaric
K |q||Q|/r^2
elastic collision
qV
constant pressure

12. electric potential a distance r from a charge
qVB
((Th) -(Tl))/(Th)
KQ/r
sqrt(T/(m/))

13. magnification equation
.5KA^2
qV
(Di)/(Do) or (Hi)/(Ho)
1/4wavelength

14. heat during a cyclic process (net heat)
BA
deltaU -deltaW
.5CV^2 or .5 Q^2/C or .5QV
2Pi * sqrt(l/g)

15. new wavelength of light as it enters a new substance
d/2
-KA
(No)(wavelength)=(Nn)(new wavelength)
E/B

16. equation for the first law of thermodynamics
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW
BA
qrB/m

17. heat during an isometric process
n(Cv)(deltaT)
d/2
(3/2)nRdeltaT
deltaU -deltaW

18. type of collision where K is not conserved
mV -m(Vo)
inelastic collision
(I^2)R
Ed=V

19. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(Di)/(Do) or (Hi)/(Ho)
(I^2)R
.5mV^2 + .5KA^2
-KA

20. formula for efficiency of a heat engine using work out
pL/A
(Wnet)/(Qin)
frequency never changes for light problems
constant pressure

21. hooke's law force of a spring
frequency never changes for light problems
-KA
AV=(A2)(V2)
nSintheta=nsintheta

22. first kinematic
V = (Vo) + at
.5CV^2 or .5 Q^2/C or .5QV
0
h/wavelength

23. isometric
n(Cv)(deltaT)
constant volume
KQ/r
(EMF)Rt/10

24. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
((Qin) -(Qout))/(Qin)
G M/((d/2)^2)
(Fn)(mu)
1/((1/C)+(1/C)..........)

25. heat required to change temperature of a substance
constant pressure
MC(deltaT)
((Qin) -(Qout))/(Qin)
G M/((d/2)^2)

26. second kinematic
delta x = (Vo)t + .5at^2
AV=(A2)(V2)
GM*M/(r^2)
2nt=mwavelength

27. adibatic
KQ/r
no heat flow
Columbs/second
qrB/m

28. formula for finding the work function of a metal if the cutoff frequency is known
2Pi * sqrt(l/g)
net work = delta K
h(Fo)
((Qin) -(Qout))/(Qin)

29. force of friction
(hc/wavelength)=h(Fo) +(Vs)
(Fn)(mu)
n(Cv)(deltaT)
J= Ft

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

31. formula relating voltage and electric field
h/mv
Ed=V
mgCostheta(mu)d
no temp change

32. focal length of a mirror with radius d
Ed=V
d/2
(Patm) + (Pgauge)
Joules/Columb

33. radius of curvature of a charged particle as it enters a uniform magnetic field
d/2
m(v^2)/qvB
opposite motion
deltaU -deltaW

34. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
roegh
(Wnet)/(Qin)
h/wavelength
(hc/wavelength)=h(Fo) +(Vs)

35. formula for critical angle
(N2)/(N1)
opposite motion
mgCostheta(mu)d
(No)(wavelength)=(Nn)(new wavelength)

36. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
1/((1/C)+(1/C)..........)
(EMF)Rt/10
(V^2)/r
.5CV^2 or .5 Q^2/C or .5QV

37. formula for finding the magnetic field a distance r from a current carrying wire
-KA
roegh
V+IR
KI/r

38. formula for change in internal energy in a cosnstat volume PV process
mV -m(Vo)
Joules/Columb
e=mc^2
(3/2)nRdeltaT

39. formula for height of the block (at the start of a pendulum string) in terms of theta and L
.5mV^2 + .5KA^2
L -LCostheta
constant pressure
VI

40. the electric force between two objects of charge Q
d/2
hc/wavelength
deltaU -deltaW
K |q||Q|/r^2

41. formula for power with current and resistance
KQ/r
(I^2)R
(Fn)(mu)
qVB

42. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(1/Do) + (1/Di) = (1/f)
(3/2)nRdeltaT
nSintheta=nsintheta
qV

43. units for voltage other than volts
Joules/Columb
1/((1/C)+(1/C)..........)
K |q||Q|/r^2
.5KA^2

44. force of frction on an incline
roegh
mgCostheta(mu)d
m(v^2)/qvB
nSintheta=nsintheta

45. formula equating energy and mass
(Patm) + (Pgauge)
deltaU = deltaQ + deltaW
e=mc^2
(hc/wavelength)=h(Fo) +(Vs)

46. forgotten power equation
F/A
FV
((Qin) -(Qout))/(Qin)
hc/wavelength

47. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
roeVg
.5mV^2 + .5KA^2
MC(deltaT)

48. the force on a charge in an electric field
(N2)/(N1)
qE
MC(deltaT)
h/wavelength

49. formula for finding the momentum of a photon
h/wavelength
KI/r
V^2=(Vo)^2 +2a*change in x
inelastic collision

50. voltage induced in a rod moving through a uniform magnetic field
(Di)/(Do) or (Hi)/(Ho)
m(v^2)/qvB
BLv
deltaU = deltaQ + deltaW