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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. formula for period of a pendulum
qE
J= Ft
2Pi * sqrt(l/g)
(V^2)/R

2. what direction is friction?
GM*M/(r^2)
MC(deltaT)
opposite motion
(I^2)R

3. heat during an isometric process
mgCostheta(mu)d
net work = delta K
n(Cv)(deltaT)
mV -m(Vo)

4. formula for critical angle
joules/second
(N2)/(N1)
1/4wavelength
(1/Do) + (1/Di) = (1/f)

5. formula for change in internal energy in a cosnstat volume PV process
deltaU -deltaW
(3/2)nRdeltaT
VI
constant volume

6. isobaric
rF
constant pressure
FV
K |q||Q|/r^2

7. force of gravity between two objects of mass m
GM*M/(r^2)
(3/2)nRdeltaT
perfectly inelastic collision
V+IR

8. force of friction
-KA
.5KA^2
(Fn)(mu)
FV

9. type of collision where K is not conserved
inelastic collision
KI/r
no temp change
J= Ft

10. formula to find the absoluate pressure at the bottom of a pool
dSintheta=mwavelength
(1/Do) + (1/Di) = (1/f)
((Th) -(Tl))/(Th)
(Patm) + (Pgauge)

11. 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
Joules/Columb
.5KA^2
1/((1/C)+(1/C)..........)

12. formula for impluse involving time
J= Ft
delta x = (Vo)t + .5at^2
qE
V+IR

13. second kinematic
(I^2)R
0
delta x = (Vo)t + .5at^2
roegh

14. heat required to change temperature of a substance
mV -m(Vo)
constant pressure
MC(deltaT)
((Qin) -(Qout))/(Qin)

15. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
sqrt(T/(m/))
1/4wavelength
mV -m(Vo)

16. formula for efficiency of a heat engine using work out
0
(Wnet)/(Qin)
K |q||Q|/r^2
Joules/Columb

17. EMF of a battery having internal resistance R
m(v^2)/qvB
V+IR
h(Fo)
0

18. energy of a photon if wavelength is known
nSintheta=nsintheta
GM*M/(r^2)
joules/second
hc/wavelength

19. formula for finding the momentum of a photon
qE
h/wavelength
constant volume
frequency never changes for light problems

20. formula for energy of a spring mass when spring is at maximum displacement
qrB/m
deltaU -deltaW
FV
.5KA^2

21. voltage induced in a rod moving through a uniform magnetic field
(3/2)nRdeltaT
BLv
mV -m(Vo)
constant pressure

22. formula for constructive interference in a diffraction grating
no force (right hand rule)
dSintheta=mwavelength
BLv
inelastic collision

23. formula for finding the magnetic field a distance r from a current carrying wire
roegh
KI/r
-KA
hc/wavelength

24. adibatic
((Th) -(Tl))/(Th)
VI
(1/Do) + (1/Di) = (1/f)
no heat flow

25. formula for power with current and resistance
G M/((d/2)^2)
h/wavelength
(I^2)R
Joules/Columb

26. isometric
constant volume
h(Fo)
(Wnet)/(Qin)
nSintheta=nsintheta

27. type of collision where K is conserved
e=mc^2
no force (right hand rule)
hc/wavelength
elastic collision

28. formula for Carnot efficiency
k|Q|/r^2
((Th) -(Tl))/(Th)
V = (Vo) + at
BLv

29. formula for finding the work function of a metal if the cutoff frequency is known
1/4wavelength
joules/second
((Qin) -(Qout))/(Qin)
h(Fo)

30. work energy theorum
F/A
net work = delta K
V^2=(Vo)^2 +2a*change in x
(I^2)RT

31. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
.5mV^2 + .5KA^2
GM*M/(r^2)
perfectly inelastic collision
G M/((d/2)^2)

32. forgotten power equation
perfectly inelastic collision
((Qin) -(Qout))/(Qin)
M(Lf)
FV

33. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
Joules/Columb
roegh
(I^2)R

34. heat during a cyclic process (net heat)
deltaU -deltaW
0
E/B
AV=(A2)(V2)

35. the force on a charge in an electric field
elastic collision
qE
VI
BA

36. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
pL/A
e=mc^2
(EMF)Rt/10

37. velocity of a molecule of gas
qVB
sqrt(3KT/m)
VI
K |q||Q|/r^2

38. isothermal
hc/wavelength
VI
.5mV^2 + .5KA^2
no temp change

39. force of frction on an incline
no heat flow
-KA
mgCostheta(mu)d
nSintheta=nsintheta

40. pressure
F/A
1/((1/C)+(1/C)..........)
KI/r
.5CV^2 or .5 Q^2/C or .5QV

41. total capacitance of capacitors in series
roegh
rF
1/((1/C)+(1/C)..........)
(hc/wavelength)=h(Fo) +(Vs)

42. formula relating voltage and electric field
Ed=V
mV -m(Vo)
nSintheta=nsintheta
(3/2)nRdeltaT

43. velocity of waves on a string if tension is known
sqrt(T/(m/))
no heat flow
net work = delta K
deltaU -deltaW

44. third kinematic
qV
no force (right hand rule)
V = (Vo) + at
V^2=(Vo)^2 +2a*change in x

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

46. new frequency of light as it enters a new substance
.5KA^2
sqrt(3KT/m)
no heat flow
frequency never changes for light problems

47. formula for buoyant force
V+IR
Ed=V
opposite motion
roeVg

48. hooke's law force of a spring
h/wavelength
-KA
opposite motion
no force (right hand rule)

49. magnification equation
AV=(A2)(V2)
(Fn)(mu)
net work = delta K
(Di)/(Do) or (Hi)/(Ho)

50. formula to find the gauge pressure at the bottom of a pool
pL/A
roegh
no force (right hand rule)
m(v^2)/qvB