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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 an electrion as it exitws from the hole
elastic collision
qrB/m
constant volume
qE

2. velocity of waves on a string if tension is known
VI
KI/r
e=mc^2
sqrt(T/(m/))

3. natural frequency of an open tube of length L
1/2wavelength
2nt=mwavelength
.5mV^2 + .5KA^2
.5CV^2 or .5 Q^2/C or .5QV

4. force of friction
GM*M/(r^2)
qE
(Fn)(mu)
J= Ft

5. total capacitance of capacitors in series
(EMF)Rt/10
1/((1/C)+(1/C)..........)
Joules/Columb
(Fn)(mu)

6. adibatic
1/4wavelength
no heat flow
deltaU = deltaQ + deltaW
.5mV^2 + .5KA^2

7. natural frequency of a closed tube of length L
1/4wavelength
G M/((d/2)^2)
VI
no heat flow

8. isobaric
nSintheta=nsintheta
h/wavelength
constant pressure
.5mV^2 + .5KA^2

9. heat during a cyclic process (net heat)
(Di)/(Do) or (Hi)/(Ho)
constant pressure
L -LCostheta
deltaU -deltaW

10. type of collision where K is conserved
elastic collision
qV
constant pressure
.5KA^2

11. force of gravity between two objects of mass m
deltaU -deltaW
GM*M/(r^2)
1/2wavelength
Q=CV

12. equation of continuity
(I^2)R
hc/wavelength
2nt=mwavelength
AV=(A2)(V2)

13. heat during an isometric process
KI/r
inelastic collision
V+IR
n(Cv)(deltaT)

14. formula for centripetal acceleration
hc/wavelength
dSintheta=mwavelength
1/((1/C)+(1/C)..........)
(V^2)/r

15. third kinematic
V^2=(Vo)^2 +2a*change in x
(Patm) + (Pgauge)
qVB
k|Q|/r^2

16. focal length of a mirror with radius d
1/2wavelength
perfectly inelastic collision
d/2
frequency never changes for light problems

17. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
V = (Vo) + at
VI
FV

18. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
no heat flow
2Pi * sqrt(l/g)
Ed=V

19. force of frction on an incline
deltaU -deltaW
mgCostheta(mu)d
pL/A
net work = delta K

20. formula for charge stored in a capciator
qE
V^2=(Vo)^2 +2a*change in x
(V^2)/r
Q=CV

21. voltage induced in a rod moving through a uniform magnetic field
K |q||Q|/r^2
KI/r
1/4wavelength
BLv

22. formula for power with current and resistance
K |q||Q|/r^2
2nt=mwavelength
(I^2)R
Columbs/second

23. the electric force between two objects of charge Q
Q=CV
deltaU = deltaQ + deltaW
qV
K |q||Q|/r^2

24. energy of a photon if wavelength is known
Joules/Columb
deltaU -deltaW
mV -m(Vo)
hc/wavelength

25. formula for the wavelength (debroglie wavelength) of a moving particle
roeVg
(I^2)RT
V+IR
h/mv

26. formula relating voltage and electric field
m(v^2)/qvB
(No)(wavelength)=(Nn)(new wavelength)
(3/2)nRdeltaT
Ed=V

27. formula for finding the momentum of a photon
MC(deltaT)
rF
h/wavelength
(Fn)(mu)

28. energy stored in a capacitor
KQ/r
rF
.5CV^2 or .5 Q^2/C or .5QV
(N2)/(N1)

29. isothermal
KI/r
(I^2)R
mV -m(Vo)
no temp change

30. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
AV=(A2)(V2)
BA
qVB
E/B

31. change in internal energy during a cyclic process
Q=CV
0
VI
(N2)/(N1)

32. resistance of a wire
K |q||Q|/r^2
((Th) -(Tl))/(Th)
pL/A
E/B

33. force a charge in a Bfield
(1/Do) + (1/Di) = (1/f)
-KA
qVB
V+IR

34. formula for power with Voltage and resistance
1/2wavelength
KI/r
(V^2)/R
no force (right hand rule)

35. formula for constructive interference in a diffraction grating
(1/Do) + (1/Di) = (1/f)
(I^2)R
VI
dSintheta=mwavelength

36. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
L -LCostheta
.5mV^2 + .5KA^2
F/A
(1/Do) + (1/Di) = (1/f)

37. formula for power with current and voltage
BLv
(Wnet)/(Qin)
VI
2Pi * sqrt(l/g)

38. formula for torque
(I^2)RT
(Fn)(mu)
no heat flow
rF

39. first kinematic
V = (Vo) + at
(Patm) + (Pgauge)
V+IR
E/B

40. what direction is friction?
qV
sqrt(3KT/m)
(V^2)/r
opposite motion

41. the force on a charge moving parallel to a magnetic field
.5KA^2
constant volume
no force (right hand rule)
delta x = (Vo)t + .5at^2

42. formula for impluse involving time
(1/Do) + (1/Di) = (1/f)
J= Ft
BLv
KQ/r

43. radius of curvature of a charged particle as it enters a uniform magnetic field
F/A
(No)(wavelength)=(Nn)(new wavelength)
FV
m(v^2)/qvB

44. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
d/2
(No)(wavelength)=(Nn)(new wavelength)
E/B

45. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
F/A
BLv
no heat flow
(I^2)RT

46. formula for efficiency not using work out
no heat flow
frequency never changes for light problems
0
((Qin) -(Qout))/(Qin)

47. work energy theorum
net work = delta K
(3/2)nRdeltaT
1/((1/C)+(1/C)..........)
roegh

48. formula for period of a pendulum
(1/Do) + (1/Di) = (1/f)
VI
2Pi * sqrt(l/g)
hc/wavelength

49. the force on a charge in an electric field
(Patm) + (Pgauge)
F/A
qE
qV

50. electric potential a distance r from a charge
1/((1/C)+(1/C)..........)
KQ/r
(1/Do) + (1/Di) = (1/f)
rF