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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 waves on a string if tension is known
sqrt(T/(m/))
elastic collision
V = (Vo) + at
BLv

2. pressure
(I^2)R
F/A
no force (right hand rule)
h(Fo)

3. heat during an isometric process
KQ/r
V^2=(Vo)^2 +2a*change in x
delta x = (Vo)t + .5at^2
n(Cv)(deltaT)

4. the units of current other than amps
1/2wavelength
opposite motion
mV -m(Vo)
Columbs/second

5. electric field in a distance r from a charge
.5mV^2 + .5KA^2
elastic collision
k|Q|/r^2
roeVg

6. force of friction
(Fn)(mu)
sqrt(3KT/m)
constant pressure
(V^2)/R

7. type of collision where objects stick togerther
2nt=mwavelength
(V^2)/r
K |q||Q|/r^2
perfectly inelastic collision

8. formula for finding the magnetic field a distance r from a current carrying wire
(EMF)Rt/10
Ed=V
KI/r
roegh

9. equation of continuity
E/B
n(Cv)(deltaT)
AV=(A2)(V2)
K |q||Q|/r^2

10. focal length of a mirror with radius d
.5CV^2 or .5 Q^2/C or .5QV
d/2
mV -m(Vo)
sqrt(T/(m/))

11. formula for finding the momentum of a photon
G M/((d/2)^2)
perfectly inelastic collision
h/wavelength
(N2)/(N1)

12. velocity of a molecule of gas
sqrt(3KT/m)
no force (right hand rule)
.5mV^2 + .5KA^2
nSintheta=nsintheta

13. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(1/Do) + (1/Di) = (1/f)
(V^2)/R
qrB/m
E/B

14. force a charge in a Bfield
BLv
(I^2)RT
qVB
((Qin) -(Qout))/(Qin)

15. heat required to change temperature of a substance
J= Ft
inelastic collision
dSintheta=mwavelength
MC(deltaT)

16. formula for constructive interference in a thin membrane with two phase changes
e=mc^2
frequency never changes for light problems
2nt=mwavelength
F/A

17. formula for power with Voltage and resistance
.5KA^2
(V^2)/R
elastic collision
VI

18. formula relating voltage and electric field
sqrt(3KT/m)
.5KA^2
Ed=V
sqrt(T/(m/))

19. formula to find the absoluate pressure at the bottom of a pool
((Qin) -(Qout))/(Qin)
(Patm) + (Pgauge)
elastic collision
1/((1/C)+(1/C)..........)

20. formula for period of a pendulum
inelastic collision
constant pressure
h(Fo)
2Pi * sqrt(l/g)

21. work energy theorum
net work = delta K
(Fn)(mu)
constant volume
(I^2)R

22. energy stored in a capacitor
.5mV^2 + .5KA^2
.5CV^2 or .5 Q^2/C or .5QV
E/B
V = (Vo) + at

23. natural frequency of an open tube of length L
(1/Do) + (1/Di) = (1/f)
e=mc^2
1/2wavelength
mgCostheta(mu)d

24. voltage induced in a rod moving through a uniform magnetic field
(3/2)nRdeltaT
sqrt(T/(m/))
BLv
(No)(wavelength)=(Nn)(new wavelength)

25. adibatic
(Patm) + (Pgauge)
mgCostheta(mu)d
no heat flow
no temp change

26. resistance of a wire
qV
pL/A
2Pi * sqrt(l/g)
V+IR

27. formula for efficiency of a heat engine using work out
no temp change
qE
G M/((d/2)^2)
(Wnet)/(Qin)

28. heat during a cyclic process (net heat)
net work = delta K
deltaU -deltaW
KI/r
.5CV^2 or .5 Q^2/C or .5QV

29. formula for impluse involving time
k|Q|/r^2
2Pi * sqrt(l/g)
J= Ft
m(v^2)/qvB

30. formula for buoyant force
roeVg
qV
mV -m(Vo)
(Fn)(mu)

31. heat required to melt a substance
net work = delta K
V+IR
GM*M/(r^2)
M(Lf)

32. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
mV -m(Vo)
KI/r
qV
k|Q|/r^2

33. formula for charge stored in a capciator
Q=CV
FV
GM*M/(r^2)
J= Ft

34. formula for energy of a spring mass when spring is at maximum displacement
J= Ft
delta x = (Vo)t + .5at^2
constant volume
.5KA^2

35. type of collision where K is conserved
no heat flow
(3/2)nRdeltaT
elastic collision
inelastic collision

36. isothermal
Ed=V
(hc/wavelength)=h(Fo) +(Vs)
no temp change
BA

37. natural frequency of a closed tube of length L
KI/r
GM*M/(r^2)
1/4wavelength
hc/wavelength

38. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
d/2
GM*M/(r^2)
(3/2)nRdeltaT

39. velocity of an electrion as it exitws from the hole
nSintheta=nsintheta
qrB/m
(1/Do) + (1/Di) = (1/f)
delta x = (Vo)t + .5at^2

40. new frequency of light as it enters a new substance
V = (Vo) + at
frequency never changes for light problems
qE
qV

41. type of collision where K is not conserved
qVB
inelastic collision
KQ/r
2Pi * sqrt(l/g)

42. energy of a photon if wavelength is known
k|Q|/r^2
hc/wavelength
1/2wavelength
KQ/r

43. isometric
constant volume
1/2wavelength
.5KA^2
1/4wavelength

44. formula for critical angle
(N2)/(N1)
qVB
(Wnet)/(Qin)
KQ/r

45. the electric force between two objects of charge Q
.5CV^2 or .5 Q^2/C or .5QV
deltaU -deltaW
K |q||Q|/r^2
(EMF)Rt/10

46. what direction is friction?
roegh
m(v^2)/qvB
opposite motion
Columbs/second

47. hooke's law force of a spring
no heat flow
-KA
deltaU -deltaW
K |q||Q|/r^2

48. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
FV
1/4wavelength
Columbs/second
(EMF)Rt/10

49. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
roegh
constant volume
joules/second

50. second kinematic
F/A
GM*M/(r^2)
BA
delta x = (Vo)t + .5at^2