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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. resistance of a wire
no force (right hand rule)
sqrt(3KT/m)
0
pL/A

2. what direction is friction?
h(Fo)
h/mv
nSintheta=nsintheta
opposite motion

3. third kinematic
e=mc^2
V^2=(Vo)^2 +2a*change in x
(N2)/(N1)
d/2

4. equation for the first law of thermodynamics
no force (right hand rule)
(EMF)Rt/10
(N2)/(N1)
deltaU = deltaQ + deltaW

5. formula for energy of a spring mass when spring is at maximum displacement
E/B
m(v^2)/qvB
.5KA^2
(1/Do) + (1/Di) = (1/f)

6. velocity of a molecule of gas
BLv
sqrt(3KT/m)
FV
delta x = (Vo)t + .5at^2

7. radius of curvature of a charged particle as it enters a uniform magnetic field
nSintheta=nsintheta
m(v^2)/qvB
dSintheta=mwavelength
rF

8. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
Joules/Columb
J= Ft
V^2=(Vo)^2 +2a*change in x

9. formula for efficiency not using work out
(I^2)RT
Columbs/second
J= Ft
((Qin) -(Qout))/(Qin)

10. lens/mirror equation
J= Ft
(1/Do) + (1/Di) = (1/f)
V = (Vo) + at
AV=(A2)(V2)

11. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
1/4wavelength
(Wnet)/(Qin)
elastic collision
qV

12. force a charge in a Bfield
FV
e=mc^2
qVB
.5KA^2

13. formula to find the gauge pressure at the bottom of a pool
1/((1/C)+(1/C)..........)
roegh
0
k|Q|/r^2

14. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
BA
mV -m(Vo)
constant pressure

15. formula to find the absoluate pressure at the bottom of a pool
perfectly inelastic collision
(Patm) + (Pgauge)
1/((1/C)+(1/C)..........)
.5KA^2

16. formula for finding magnetic flux
((Th) -(Tl))/(Th)
BA
deltaU -deltaW
.5mV^2 + .5KA^2

17. formula for finding the work function of a metal if the cutoff frequency is known
nSintheta=nsintheta
m(v^2)/qvB
h(Fo)
(EMF)Rt/10

18. formula for change in internal energy in a cosnstat volume PV process
(V^2)/r
qVB
(3/2)nRdeltaT
J= Ft

19. pressure
mgCostheta(mu)d
F/A
(Patm) + (Pgauge)
rF

20. natural frequency of an open tube of length L
deltaU = deltaQ + deltaW
(Patm) + (Pgauge)
roeVg
1/2wavelength

21. formula for the wavelength (debroglie wavelength) of a moving particle
Ed=V
deltaU -deltaW
h/mv
1/4wavelength

22. force of frction on an incline
(3/2)nRdeltaT
mgCostheta(mu)d
dSintheta=mwavelength
perfectly inelastic collision

23. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
net work = delta K
Columbs/second
.5mV^2 + .5KA^2
no force (right hand rule)

24. formula for power with current and voltage
deltaU -deltaW
VI
(Patm) + (Pgauge)
KQ/r

25. formula for period of a pendulum
(V^2)/R
h(Fo)
E/B
2Pi * sqrt(l/g)

26. formula for finding the momentum of a photon
h/wavelength
V = (Vo) + at
(EMF)Rt/10
(Di)/(Do) or (Hi)/(Ho)

27. formula for impulse involving momentum
1/2wavelength
FV
n(Cv)(deltaT)
mV -m(Vo)

28. velocity of waves on a string if tension is known
sqrt(T/(m/))
roeVg
mgCostheta(mu)d
.5CV^2 or .5 Q^2/C or .5QV

29. snells law
(Di)/(Do) or (Hi)/(Ho)
nSintheta=nsintheta
(hc/wavelength)=h(Fo) +(Vs)
opposite motion

30. formula for critical angle
sqrt(T/(m/))
(N2)/(N1)
opposite motion
roegh

31. heat during an isometric process
pL/A
n(Cv)(deltaT)
(Di)/(Do) or (Hi)/(Ho)
E/B

32. formula for torque
deltaU = deltaQ + deltaW
sqrt(T/(m/))
rF
J= Ft

33. isobaric
sqrt(3KT/m)
2Pi * sqrt(l/g)
constant pressure
F/A

34. the units of current other than amps
Columbs/second
1/2wavelength
hc/wavelength
AV=(A2)(V2)

35. formula for finding the magnetic field a distance r from a current carrying wire
MC(deltaT)
KI/r
((Th) -(Tl))/(Th)
2nt=mwavelength

36. work energy theorum
sqrt(T/(m/))
Ed=V
net work = delta K
(N2)/(N1)

37. the electric force between two objects of charge Q
Joules/Columb
K |q||Q|/r^2
KI/r
no temp change

38. force of friction
(V^2)/r
elastic collision
FV
(Fn)(mu)

39. formula for constructive interference in a diffraction grating
deltaU = deltaQ + deltaW
G M/((d/2)^2)
constant pressure
dSintheta=mwavelength

40. new wavelength of light as it enters a new substance
(I^2)R
m(v^2)/qvB
KQ/r
(No)(wavelength)=(Nn)(new wavelength)

41. type of collision where K is not conserved
d/2
BA
(V^2)/r
inelastic collision

42. formula for centripetal acceleration
0
Joules/Columb
deltaU -deltaW
(V^2)/r

43. formula for power with Voltage and resistance
(V^2)/R
opposite motion
sqrt(T/(m/))
-KA

44. adibatic
rF
mgCostheta(mu)d
deltaU = deltaQ + deltaW
no heat flow

45. force of gravity between two objects of mass m
GM*M/(r^2)
(EMF)Rt/10
(V^2)/r
((Th) -(Tl))/(Th)

46. forgotten power equation
M(Lf)
FV
no force (right hand rule)
G M/((d/2)^2)

47. formula for charge stored in a capciator
Q=CV
no force (right hand rule)
k|Q|/r^2
KI/r

48. heat during a cyclic process (net heat)
deltaU -deltaW
delta x = (Vo)t + .5at^2
-KA
2nt=mwavelength

49. formula for efficiency of a heat engine using work out
E/B
(Wnet)/(Qin)
F/A
h(Fo)

50. type of collision where K is conserved
elastic collision
(No)(wavelength)=(Nn)(new wavelength)
delta x = (Vo)t + .5at^2
KI/r