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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 power with current and resistance
(I^2)R
opposite motion
frequency never changes for light problems
1/2wavelength

2. formula to find the absoluate pressure at the bottom of a pool
V = (Vo) + at
(3/2)nRdeltaT
constant pressure
(Patm) + (Pgauge)

3. energy of a photon if wavelength is known
inelastic collision
h(Fo)
qE
hc/wavelength

4. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
KI/r
MC(deltaT)
F/A

5. what direction is friction?
perfectly inelastic collision
opposite motion
KI/r
(Fn)(mu)

6. units for voltage other than volts
Joules/Columb
m(v^2)/qvB
KI/r
qrB/m

7. hooke's law force of a spring
(Wnet)/(Qin)
-KA
(I^2)R
K |q||Q|/r^2

8. formula for height of the block (at the start of a pendulum string) in terms of theta and L
V = (Vo) + at
L -LCostheta
1/2wavelength
mV -m(Vo)

9. change in internal energy during a cyclic process
no temp change
(Wnet)/(Qin)
BLv
0

10. formula for efficiency of a heat engine using work out
constant volume
constant pressure
sqrt(3KT/m)
(Wnet)/(Qin)

11. second kinematic
1/2wavelength
d/2
delta x = (Vo)t + .5at^2
(No)(wavelength)=(Nn)(new wavelength)

12. formula relating voltage and electric field
V^2=(Vo)^2 +2a*change in x
Ed=V
(Di)/(Do) or (Hi)/(Ho)
M(Lf)

13. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
nSintheta=nsintheta
Q=CV
.5mV^2 + .5KA^2
qV

14. formula for finding the magnetic field a distance r from a current carrying wire
.5CV^2 or .5 Q^2/C or .5QV
(I^2)R
KI/r
.5mV^2 + .5KA^2

15. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
inelastic collision
opposite motion
no temp change

16. formula for the wavelength (debroglie wavelength) of a moving particle
FV
h/mv
no force (right hand rule)
no heat flow

17. force of friction
1/2wavelength
KI/r
(EMF)Rt/10
(Fn)(mu)

18. formula for finding the momentum of a photon
perfectly inelastic collision
h/wavelength
inelastic collision
(Fn)(mu)

19. type of collision where K is conserved
elastic collision
constant pressure
qV
n(Cv)(deltaT)

20. formula for power with Voltage and resistance
mV -m(Vo)
sqrt(3KT/m)
(V^2)/R
nSintheta=nsintheta

21. formula equating energy and mass
perfectly inelastic collision
elastic collision
e=mc^2
mgCostheta(mu)d

22. velocity of a molecule of gas
h(Fo)
sqrt(3KT/m)
n(Cv)(deltaT)
Ed=V

23. formula for power with current and voltage
rF
VI
(I^2)RT
(V^2)/R

24. voltage induced in a rod moving through a uniform magnetic field
BLv
sqrt(3KT/m)
pL/A
delta x = (Vo)t + .5at^2

25. total capacitance of capacitors in series
no heat flow
1/((1/C)+(1/C)..........)
qE
K |q||Q|/r^2

26. formula for torque
G M/((d/2)^2)
rF
inelastic collision
net work = delta K

27. force of gravity between two objects of mass m
roegh
.5CV^2 or .5 Q^2/C or .5QV
GM*M/(r^2)
(V^2)/r

28. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
h(Fo)
pL/A
hc/wavelength
G M/((d/2)^2)

29. formula for Carnot efficiency
((Th) -(Tl))/(Th)
frequency never changes for light problems
sqrt(3KT/m)
nSintheta=nsintheta

30. radius of curvature of a charged particle as it enters a uniform magnetic field
.5CV^2 or .5 Q^2/C or .5QV
frequency never changes for light problems
0
m(v^2)/qvB

31. the force on a charge in an electric field
(1/Do) + (1/Di) = (1/f)
h(Fo)
pL/A
qE

32. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
K |q||Q|/r^2
V^2=(Vo)^2 +2a*change in x
(hc/wavelength)=h(Fo) +(Vs)
n(Cv)(deltaT)

33. electric potential a distance r from a charge
KQ/r
hc/wavelength
2Pi * sqrt(l/g)
AV=(A2)(V2)

34. adibatic
no heat flow
roegh
rF
h(Fo)

35. equation of continuity
AV=(A2)(V2)
no temp change
V = (Vo) + at
constant pressure

36. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
mV -m(Vo)
1/((1/C)+(1/C)..........)
rF

37. equation for the first law of thermodynamics
0
delta x = (Vo)t + .5at^2
deltaU = deltaQ + deltaW
frequency never changes for light problems

38. snells law
nSintheta=nsintheta
perfectly inelastic collision
(1/Do) + (1/Di) = (1/f)
E/B

39. first kinematic
perfectly inelastic collision
hc/wavelength
(Di)/(Do) or (Hi)/(Ho)
V = (Vo) + at

40. resistance of a wire
2Pi * sqrt(l/g)
pL/A
GM*M/(r^2)
KQ/r

41. formula for impluse involving time
(3/2)nRdeltaT
BLv
(1/Do) + (1/Di) = (1/f)
J= Ft

42. focal length of a mirror with radius d
.5mV^2 + .5KA^2
d/2
frequency never changes for light problems
deltaU -deltaW

43. formula for centripetal acceleration
(V^2)/r
1/4wavelength
(1/Do) + (1/Di) = (1/f)
(N2)/(N1)

44. formula for finding magnetic flux
BA
net work = delta K
constant pressure
elastic collision

45. forgotten power equation
h/wavelength
FV
nSintheta=nsintheta
k|Q|/r^2

46. isothermal
dSintheta=mwavelength
no temp change
(hc/wavelength)=h(Fo) +(Vs)
constant pressure

47. velocity of waves on a string if tension is known
mgCostheta(mu)d
h/wavelength
sqrt(T/(m/))
VI

48. the units of power other than watts
(Fn)(mu)
AV=(A2)(V2)
joules/second
no temp change

49. isobaric
h/mv
constant pressure
no temp change
(No)(wavelength)=(Nn)(new wavelength)

50. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
no heat flow
(Patm) + (Pgauge)
(Wnet)/(Qin)