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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 waves on a string if tension is known
(Di)/(Do) or (Hi)/(Ho)
(Fn)(mu)
sqrt(T/(m/))
GM*M/(r^2)

2. what direction is friction?
inelastic collision
sqrt(3KT/m)
k|Q|/r^2
opposite motion

3. type of collision where objects stick togerther
(Wnet)/(Qin)
2Pi * sqrt(l/g)
.5CV^2 or .5 Q^2/C or .5QV
perfectly inelastic collision

4. formula for finding the momentum of a photon
constant volume
1/2wavelength
h/wavelength
(No)(wavelength)=(Nn)(new wavelength)

5. forgotten power equation
FV
roegh
KQ/r
F/A

6. formula to find the gauge pressure at the bottom of a pool
roegh
0
Ed=V
Q=CV

7. isometric
qE
opposite motion
nSintheta=nsintheta
constant volume

8. the units of power other than watts
n(Cv)(deltaT)
0
(No)(wavelength)=(Nn)(new wavelength)
joules/second

9. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
constant pressure
F/A
(EMF)Rt/10
.5mV^2 + .5KA^2

10. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
h(Fo)
(V^2)/r
-KA

11. units for voltage other than volts
MC(deltaT)
BLv
K |q||Q|/r^2
Joules/Columb

12. formula for finding magnetic flux
BA
Q=CV
m(v^2)/qvB
2nt=mwavelength

13. third kinematic
roeVg
delta x = (Vo)t + .5at^2
V+IR
V^2=(Vo)^2 +2a*change in x

14. magnification equation
nSintheta=nsintheta
(Di)/(Do) or (Hi)/(Ho)
VI
delta x = (Vo)t + .5at^2

15. velocity of a molecule of gas
F/A
opposite motion
pL/A
sqrt(3KT/m)

16. the units of current other than amps
.5CV^2 or .5 Q^2/C or .5QV
((Th) -(Tl))/(Th)
Columbs/second
mV -m(Vo)

17. 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
(Wnet)/(Qin)
(EMF)Rt/10
(I^2)RT

18. type of collision where K is not conserved
AV=(A2)(V2)
V^2=(Vo)^2 +2a*change in x
inelastic collision
J= Ft

19. force of friction
mgCostheta(mu)d
frequency never changes for light problems
(Fn)(mu)
deltaU = deltaQ + deltaW

20. electric potential a distance r from a charge
KQ/r
E/B
d/2
2nt=mwavelength

21. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
h(Fo)
qV
(N2)/(N1)
((Qin) -(Qout))/(Qin)

22. EMF of a battery having internal resistance R
V+IR
2Pi * sqrt(l/g)
roegh
((Qin) -(Qout))/(Qin)

23. formula for critical angle
roeVg
qE
(N2)/(N1)
(Wnet)/(Qin)

24. formula for energy of a spring mass when spring is at maximum displacement
k|Q|/r^2
Joules/Columb
.5KA^2
FV

25. heat required to melt a substance
M(Lf)
sqrt(3KT/m)
delta x = (Vo)t + .5at^2
KI/r

26. heat during an isometric process
KI/r
n(Cv)(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
mgCostheta(mu)d

27. resistance of a wire
Q=CV
pL/A
((Th) -(Tl))/(Th)
(V^2)/R

28. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
qVB
.5KA^2
deltaU -deltaW

29. equation for the first law of thermodynamics
.5mV^2 + .5KA^2
deltaU = deltaQ + deltaW
inelastic collision
2Pi * sqrt(l/g)

30. formula for centripetal acceleration
(V^2)/r
h/mv
qrB/m
L -LCostheta

31. snells law
k|Q|/r^2
J= Ft
mV -m(Vo)
nSintheta=nsintheta

32. formula equating energy and mass
delta x = (Vo)t + .5at^2
no heat flow
roeVg
e=mc^2

33. natural frequency of a closed tube of length L
1/4wavelength
elastic collision
m(v^2)/qvB
L -LCostheta

34. formula for constructive interference in a thin membrane with two phase changes
1/2wavelength
2nt=mwavelength
m(v^2)/qvB
no force (right hand rule)

35. force a charge in a Bfield
V+IR
((Th) -(Tl))/(Th)
qVB
VI

36. formula for finding the magnetic field a distance r from a current carrying wire
(1/Do) + (1/Di) = (1/f)
KI/r
2nt=mwavelength
0

37. velocity of an electrion as it exitws from the hole
qrB/m
h/wavelength
V^2=(Vo)^2 +2a*change in x
constant volume

38. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
(1/Do) + (1/Di) = (1/f)
E/B
AV=(A2)(V2)

39. new wavelength of light as it enters a new substance
frequency never changes for light problems
(3/2)nRdeltaT
(No)(wavelength)=(Nn)(new wavelength)
(Fn)(mu)

40. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
E/B
no force (right hand rule)
G M/((d/2)^2)

41. force of gravity between two objects of mass m
GM*M/(r^2)
Columbs/second
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))

42. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
rF
delta x = (Vo)t + .5at^2
constant volume

43. first kinematic
V = (Vo) + at
sqrt(T/(m/))
1/((1/C)+(1/C)..........)
(No)(wavelength)=(Nn)(new wavelength)

44. formula for power with current and voltage
no temp change
VI
V = (Vo) + at
rF

45. formula relating voltage and electric field
((Th) -(Tl))/(Th)
Ed=V
e=mc^2
KQ/r

46. formula for change in internal energy in a cosnstat volume PV process
KI/r
(3/2)nRdeltaT
.5CV^2 or .5 Q^2/C or .5QV
AV=(A2)(V2)

47. isothermal
nSintheta=nsintheta
no temp change
sqrt(3KT/m)
2nt=mwavelength

48. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
h(Fo)
KI/r
AV=(A2)(V2)

49. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
net work = delta K
BLv
k|Q|/r^2
(hc/wavelength)=h(Fo) +(Vs)

50. formula for torque
L -LCostheta
M(Lf)
J= Ft
rF