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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. EMF of a battery having internal resistance R
V+IR
pL/A
mV -m(Vo)
roeVg

2. velocity of a molecule of gas
(I^2)RT
2nt=mwavelength
sqrt(3KT/m)
.5KA^2

3. new wavelength of light as it enters a new substance
joules/second
(No)(wavelength)=(Nn)(new wavelength)
hc/wavelength
deltaU = deltaQ + deltaW

4. what direction is friction?
opposite motion
1/((1/C)+(1/C)..........)
Joules/Columb
h/wavelength

5. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
mgCostheta(mu)d
mV -m(Vo)
rF

6. formula for the wavelength (debroglie wavelength) of a moving particle
n(Cv)(deltaT)
delta x = (Vo)t + .5at^2
h/wavelength
h/mv

7. formula for impulse involving momentum
(V^2)/R
mV -m(Vo)
M(Lf)
Ed=V

8. velocity of waves on a string if tension is known
e=mc^2
sqrt(T/(m/))
h(Fo)
no force (right hand rule)

9. formula for power with current and voltage
G M/((d/2)^2)
(I^2)R
pL/A
VI

10. first kinematic
V = (Vo) + at
constant volume
KQ/r
roeVg

11. formula for torque
mgCostheta(mu)d
FV
rF
roeVg

12. type of collision where K is not conserved
(V^2)/R
h/mv
inelastic collision
joules/second

13. formula for constructive interference in a diffraction grating
E/B
(I^2)R
dSintheta=mwavelength
(Di)/(Do) or (Hi)/(Ho)

14. total capacitance of capacitors in series
constant pressure
no temp change
1/4wavelength
1/((1/C)+(1/C)..........)

15. the units of current other than amps
V = (Vo) + at
h(Fo)
BA
Columbs/second

16. velocity of an electrion as it exitws from the hole
((Th) -(Tl))/(Th)
delta x = (Vo)t + .5at^2
qrB/m
AV=(A2)(V2)

17. formula for finding the momentum of a photon
1/2wavelength
-KA
((Qin) -(Qout))/(Qin)
h/wavelength

18. electric field in a distance r from a charge
Joules/Columb
(Patm) + (Pgauge)
k|Q|/r^2
no force (right hand rule)

19. the force on a charge moving parallel to a magnetic field
nSintheta=nsintheta
rF
no force (right hand rule)
1/4wavelength

20. formula for constructive interference in a thin membrane with two phase changes
joules/second
2nt=mwavelength
0
mV -m(Vo)

21. lens/mirror equation
(V^2)/r
(EMF)Rt/10
(Wnet)/(Qin)
(1/Do) + (1/Di) = (1/f)

22. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
BA
net work = delta K
(hc/wavelength)=h(Fo) +(Vs)
qrB/m

23. natural frequency of a closed tube of length L
BA
L -LCostheta
1/4wavelength
mV -m(Vo)

24. formula for finding the work function of a metal if the cutoff frequency is known
K |q||Q|/r^2
qrB/m
n(Cv)(deltaT)
h(Fo)

25. new frequency of light as it enters a new substance
mgCostheta(mu)d
qV
frequency never changes for light problems
(I^2)RT

26. formula for finding magnetic flux
opposite motion
e=mc^2
mgCostheta(mu)d
BA

27. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
qVB
mgCostheta(mu)d
Ed=V
G M/((d/2)^2)

28. heat during an isometric process
n(Cv)(deltaT)
d/2
BA
.5mV^2 + .5KA^2

29. formula to find the absoluate pressure at the bottom of a pool
joules/second
(Di)/(Do) or (Hi)/(Ho)
qrB/m
(Patm) + (Pgauge)

30. the electric force between two objects of charge Q
K |q||Q|/r^2
h/wavelength
sqrt(3KT/m)
opposite motion

31. formula for power with Voltage and resistance
Ed=V
(V^2)/R
KQ/r
((Th) -(Tl))/(Th)

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
inelastic collision
qV
Columbs/second
((Qin) -(Qout))/(Qin)

33. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
F/A
.5mV^2 + .5KA^2
(3/2)nRdeltaT
(hc/wavelength)=h(Fo) +(Vs)

34. formula for Carnot efficiency
VI
((Th) -(Tl))/(Th)
(I^2)R
(No)(wavelength)=(Nn)(new wavelength)

35. formula for charge stored in a capciator
d/2
opposite motion
Q=CV
deltaU = deltaQ + deltaW

36. formula for energy of a spring mass when spring is at maximum displacement
BA
mgCostheta(mu)d
1/((1/C)+(1/C)..........)
.5KA^2

37. formula for impluse involving time
no heat flow
V+IR
J= Ft
L -LCostheta

38. heat required to change temperature of a substance
1/2wavelength
MC(deltaT)
.5KA^2
2nt=mwavelength

39. forgotten power equation
Q=CV
FV
no temp change
pL/A

40. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
0
V = (Vo) + at
-KA

41. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
(1/Do) + (1/Di) = (1/f)
1/4wavelength
(hc/wavelength)=h(Fo) +(Vs)

42. voltage induced in a rod moving through a uniform magnetic field
BLv
delta x = (Vo)t + .5at^2
MC(deltaT)
V+IR

43. heat required to melt a substance
M(Lf)
(V^2)/R
(1/Do) + (1/Di) = (1/f)
m(v^2)/qvB

44. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(Di)/(Do) or (Hi)/(Ho)
2nt=mwavelength
(I^2)RT
(No)(wavelength)=(Nn)(new wavelength)

45. resistance of a wire
pL/A
((Qin) -(Qout))/(Qin)
L -LCostheta
KQ/r

46. snells law
frequency never changes for light problems
qV
delta x = (Vo)t + .5at^2
nSintheta=nsintheta

47. third kinematic
qE
-KA
V^2=(Vo)^2 +2a*change in x
F/A

48. isobaric
constant pressure
h/mv
J= Ft
net work = delta K

49. natural frequency of an open tube of length L
(Patm) + (Pgauge)
qV
pL/A
1/2wavelength

50. formula to find the gauge pressure at the bottom of a pool
hc/wavelength
.5CV^2 or .5 Q^2/C or .5QV
roegh
delta x = (Vo)t + .5at^2