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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. the force on a charge moving parallel to a magnetic field
Ed=V
no force (right hand rule)
2Pi * sqrt(l/g)
V = (Vo) + at

2. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
n(Cv)(deltaT)
G M/((d/2)^2)
(Patm) + (Pgauge)
AV=(A2)(V2)

3. natural frequency of an open tube of length L
1/2wavelength
.5CV^2 or .5 Q^2/C or .5QV
elastic collision
opposite motion

4. new frequency of light as it enters a new substance
K |q||Q|/r^2
opposite motion
frequency never changes for light problems
(Di)/(Do) or (Hi)/(Ho)

5. the units of power other than watts
G M/((d/2)^2)
2Pi * sqrt(l/g)
L -LCostheta
joules/second

6. forgotten power equation
(Wnet)/(Qin)
(Patm) + (Pgauge)
no heat flow
FV

7. voltage induced in a rod moving through a uniform magnetic field
BLv
(Fn)(mu)
perfectly inelastic collision
KI/r

8. magnification equation
(Di)/(Do) or (Hi)/(Ho)
2nt=mwavelength
pL/A
no temp change

9. natural frequency of a closed tube of length L
1/4wavelength
1/2wavelength
(I^2)RT
0

10. electric field in a distance r from a charge
k|Q|/r^2
BLv
(Fn)(mu)
constant volume

11. type of collision where objects stick togerther
.5CV^2 or .5 Q^2/C or .5QV
perfectly inelastic collision
FV
h/wavelength

12. formula to find the gauge pressure at the bottom of a pool
roegh
(V^2)/r
h(Fo)
AV=(A2)(V2)

13. formula for centripetal acceleration
(hc/wavelength)=h(Fo) +(Vs)
K |q||Q|/r^2
(V^2)/r
-KA

14. second kinematic
1/2wavelength
(Fn)(mu)
delta x = (Vo)t + .5at^2
(1/Do) + (1/Di) = (1/f)

15. the units of current other than amps
K |q||Q|/r^2
Columbs/second
.5CV^2 or .5 Q^2/C or .5QV
(I^2)R

16. force of gravity between two objects of mass m
MC(deltaT)
GM*M/(r^2)
BLv
Joules/Columb

17. work energy theorum
(3/2)nRdeltaT
G M/((d/2)^2)
net work = delta K
constant pressure

18. isothermal
deltaU = deltaQ + deltaW
no temp change
FV
Ed=V

19. formula for finding magnetic flux
BA
sqrt(T/(m/))
Ed=V
(Patm) + (Pgauge)

20. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(N2)/(N1)
KQ/r
(EMF)Rt/10
qE

21. velocity of waves on a string if tension is known
M(Lf)
sqrt(T/(m/))
(Di)/(Do) or (Hi)/(Ho)
BLv

22. resistance of a wire
E/B
KQ/r
(Di)/(Do) or (Hi)/(Ho)
pL/A

23. isobaric
constant pressure
deltaU -deltaW
(hc/wavelength)=h(Fo) +(Vs)
no temp change

24. formula for height of the block (at the start of a pendulum string) in terms of theta and L
qrB/m
elastic collision
L -LCostheta
1/4wavelength

25. energy of a photon if wavelength is known
n(Cv)(deltaT)
hc/wavelength
2nt=mwavelength
E/B

26. formula for constructive interference in a thin membrane with two phase changes
-KA
((Qin) -(Qout))/(Qin)
2nt=mwavelength
h/wavelength

27. what direction is friction?
opposite motion
n(Cv)(deltaT)
(V^2)/r
Ed=V

28. formula for critical angle
2nt=mwavelength
M(Lf)
(N2)/(N1)
no force (right hand rule)

29. radius of curvature of a charged particle as it enters a uniform magnetic field
1/((1/C)+(1/C)..........)
e=mc^2
m(v^2)/qvB
(Patm) + (Pgauge)

30. isometric
constant volume
inelastic collision
e=mc^2
FV

31. formula equating energy and mass
inelastic collision
V = (Vo) + at
e=mc^2
VI

32. pressure
m(v^2)/qvB
sqrt(3KT/m)
Joules/Columb
F/A

33. equation of continuity
AV=(A2)(V2)
mV -m(Vo)
joules/second
V = (Vo) + at

34. formula for Carnot efficiency
sqrt(3KT/m)
((Th) -(Tl))/(Th)
h(Fo)
qVB

35. third kinematic
(N2)/(N1)
Joules/Columb
V^2=(Vo)^2 +2a*change in x
(EMF)Rt/10

36. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
AV=(A2)(V2)
GM*M/(r^2)
no force (right hand rule)

37. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
rF
pL/A
deltaU -deltaW

38. formula for finding the work function of a metal if the cutoff frequency is known
-KA
sqrt(T/(m/))
mV -m(Vo)
h(Fo)

39. force of frction on an incline
mgCostheta(mu)d
(Patm) + (Pgauge)
J= Ft
Ed=V

40. formula for period of a pendulum
KI/r
1/((1/C)+(1/C)..........)
BLv
2Pi * sqrt(l/g)

41. formula for impulse involving momentum
roegh
.5CV^2 or .5 Q^2/C or .5QV
mV -m(Vo)
opposite motion

42. formula for constructive interference in a diffraction grating
L -LCostheta
Columbs/second
dSintheta=mwavelength
(Wnet)/(Qin)

43. formula relating voltage and electric field
joules/second
Ed=V
mgCostheta(mu)d
deltaU = deltaQ + deltaW

44. force of friction
GM*M/(r^2)
F/A
(Fn)(mu)
qVB

45. equation for the first law of thermodynamics
Columbs/second
joules/second
deltaU = deltaQ + deltaW
m(v^2)/qvB

46. total capacitance of capacitors in series
constant pressure
1/((1/C)+(1/C)..........)
h(Fo)
k|Q|/r^2

47. focal length of a mirror with radius d
d/2
(No)(wavelength)=(Nn)(new wavelength)
h/wavelength
L -LCostheta

48. formula for finding the magnetic field a distance r from a current carrying wire
-KA
KI/r
KQ/r
.5KA^2

49. heat during an isometric process
mV -m(Vo)
M(Lf)
.5mV^2 + .5KA^2
n(Cv)(deltaT)

50. EMF of a battery having internal resistance R
Q=CV
G M/((d/2)^2)
V+IR
(Fn)(mu)