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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 finding the magnetic field a distance r from a current carrying wire
KI/r
MC(deltaT)
1/((1/C)+(1/C)..........)
AV=(A2)(V2)

2. formula for finding magnetic flux
n(Cv)(deltaT)
(Wnet)/(Qin)
hc/wavelength
BA

3. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
Q=CV
K |q||Q|/r^2
GM*M/(r^2)

4. formula for the wavelength (debroglie wavelength) of a moving particle
V+IR
qVB
constant pressure
h/mv

5. resistance of a wire
pL/A
opposite motion
V = (Vo) + at
deltaU -deltaW

6. voltage induced in a rod moving through a uniform magnetic field
BLv
V^2=(Vo)^2 +2a*change in x
perfectly inelastic collision
(No)(wavelength)=(Nn)(new wavelength)

7. adibatic
((Th) -(Tl))/(Th)
VI
no heat flow
2Pi * sqrt(l/g)

8. formula for power with Voltage and resistance
qV
(V^2)/R
VI
delta x = (Vo)t + .5at^2

9. formula equating energy and mass
-KA
sqrt(T/(m/))
e=mc^2
no temp change

10. natural frequency of an open tube of length L
1/4wavelength
(Fn)(mu)
2Pi * sqrt(l/g)
1/2wavelength

11. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
no force (right hand rule)
opposite motion
.5mV^2 + .5KA^2
.5KA^2

12. isobaric
frequency never changes for light problems
F/A
constant pressure
Ed=V

13. hooke's law force of a spring
F/A
nSintheta=nsintheta
-KA
.5KA^2

14. change in internal energy during a cyclic process
Q=CV
0
(V^2)/R
GM*M/(r^2)

15. pressure
F/A
GM*M/(r^2)
(I^2)RT
(hc/wavelength)=h(Fo) +(Vs)

16. radius of curvature of a charged particle as it enters a uniform magnetic field
pL/A
0
m(v^2)/qvB
-KA

17. velocity of an electrion as it exitws from the hole
(I^2)R
qrB/m
deltaU = deltaQ + deltaW
h/wavelength

18. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
d/2
(hc/wavelength)=h(Fo) +(Vs)
.5KA^2
e=mc^2

19. type of collision where objects stick togerther
h/mv
1/2wavelength
perfectly inelastic collision
(Di)/(Do) or (Hi)/(Ho)

20. force of gravity between two objects of mass m
1/2wavelength
GM*M/(r^2)
Ed=V
0

21. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
elastic collision
KQ/r
(I^2)RT
(V^2)/r

22. velocity of waves on a string if tension is known
FV
sqrt(T/(m/))
sqrt(3KT/m)
(I^2)R

23. equation for the first law of thermodynamics
h/mv
deltaU = deltaQ + deltaW
d/2
2Pi * sqrt(l/g)

24. isometric
.5mV^2 + .5KA^2
constant volume
K |q||Q|/r^2
BLv

25. natural frequency of a closed tube of length L
roeVg
(Fn)(mu)
1/4wavelength
AV=(A2)(V2)

26. what direction is friction?
BLv
opposite motion
h(Fo)
sqrt(T/(m/))

27. formula for centripetal acceleration
(V^2)/r
d/2
(1/Do) + (1/Di) = (1/f)
roeVg

28. snells law
nSintheta=nsintheta
2nt=mwavelength
constant volume
sqrt(T/(m/))

29. heat during an isometric process
pL/A
n(Cv)(deltaT)
(I^2)RT
h/mv

30. formula for impulse involving momentum
mV -m(Vo)
deltaU = deltaQ + deltaW
J= Ft
AV=(A2)(V2)

31. formula for finding the work function of a metal if the cutoff frequency is known
(Fn)(mu)
J= Ft
h(Fo)
qrB/m

32. heat required to melt a substance
(Di)/(Do) or (Hi)/(Ho)
VI
M(Lf)
(Wnet)/(Qin)

33. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
qrB/m
.5mV^2 + .5KA^2
(No)(wavelength)=(Nn)(new wavelength)

34. focal length of a mirror with radius d
F/A
.5KA^2
V = (Vo) + at
d/2

35. formula for torque
no force (right hand rule)
constant pressure
rF
G M/((d/2)^2)

36. energy stored in a capacitor
qrB/m
.5CV^2 or .5 Q^2/C or .5QV
V+IR
dSintheta=mwavelength

37. units for voltage other than volts
Joules/Columb
d/2
((Qin) -(Qout))/(Qin)
1/2wavelength

38. second kinematic
Joules/Columb
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2
h/wavelength

39. the units of current other than amps
KI/r
Columbs/second
(Patm) + (Pgauge)
VI

40. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
nSintheta=nsintheta
sqrt(T/(m/))
L -LCostheta

41. velocity of a molecule of gas
sqrt(3KT/m)
F/A
n(Cv)(deltaT)
(N2)/(N1)

42. formula for finding the momentum of a photon
(Di)/(Do) or (Hi)/(Ho)
(EMF)Rt/10
h/wavelength
F/A

43. third kinematic
BA
0
(Patm) + (Pgauge)
V^2=(Vo)^2 +2a*change in x

44. new frequency of light as it enters a new substance
GM*M/(r^2)
sqrt(3KT/m)
h/wavelength
frequency never changes for light problems

45. the force on a charge moving parallel to a magnetic field
qV
no force (right hand rule)
inelastic collision
(1/Do) + (1/Di) = (1/f)

46. formula for change in internal energy in a cosnstat volume PV process
h/wavelength
V+IR
(3/2)nRdeltaT
.5mV^2 + .5KA^2

47. first kinematic
sqrt(3KT/m)
V = (Vo) + at
2nt=mwavelength
n(Cv)(deltaT)

48. isothermal
K |q||Q|/r^2
no temp change
1/((1/C)+(1/C)..........)
L -LCostheta

49. heat during a cyclic process (net heat)
dSintheta=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2
deltaU -deltaW

50. electric field in a distance r from a charge
.5mV^2 + .5KA^2
BLv
qE
k|Q|/r^2