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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 constructive interference in a diffraction grating
V^2=(Vo)^2 +2a*change in x
dSintheta=mwavelength
L -LCostheta
Q=CV

2. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
pL/A
no temp change
G M/((d/2)^2)
(Wnet)/(Qin)

3. formula for torque
2nt=mwavelength
d/2
rF
mV -m(Vo)

4. type of collision where objects stick togerther
M(Lf)
no temp change
V^2=(Vo)^2 +2a*change in x
perfectly inelastic collision

5. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
BA
mgCostheta(mu)d
k|Q|/r^2
(EMF)Rt/10

6. EMF of a battery having internal resistance R
.5KA^2
no force (right hand rule)
V+IR
qVB

7. forgotten power equation
V = (Vo) + at
nSintheta=nsintheta
E/B
FV

8. formula for critical angle
(N2)/(N1)
roeVg
Columbs/second
h/wavelength

9. second kinematic
1/((1/C)+(1/C)..........)
(3/2)nRdeltaT
delta x = (Vo)t + .5at^2
1/4wavelength

10. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
-KA
Columbs/second
VI

11. formula for power with Voltage and resistance
(V^2)/R
KQ/r
Columbs/second
deltaU -deltaW

12. energy of a photon if wavelength is known
1/((1/C)+(1/C)..........)
hc/wavelength
h(Fo)
(V^2)/r

13. snells law
roegh
nSintheta=nsintheta
net work = delta K
constant volume

14. adibatic
((Th) -(Tl))/(Th)
roegh
no heat flow
roeVg

15. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
(I^2)R
(I^2)RT
K |q||Q|/r^2

16. formula for constructive interference in a thin membrane with two phase changes
(V^2)/R
1/2wavelength
K |q||Q|/r^2
2nt=mwavelength

17. type of collision where K is conserved
((Qin) -(Qout))/(Qin)
elastic collision
(V^2)/R
qE

18. natural frequency of an open tube of length L
h/mv
net work = delta K
1/2wavelength
h/wavelength

19. formula for finding magnetic flux
d/2
BA
(1/Do) + (1/Di) = (1/f)
.5CV^2 or .5 Q^2/C or .5QV

20. formula for period of a pendulum
0
deltaU -deltaW
V = (Vo) + at
2Pi * sqrt(l/g)

21. formula relating voltage and electric field
no heat flow
Ed=V
(EMF)Rt/10
Joules/Columb

22. hooke's law force of a spring
-KA
2nt=mwavelength
(Patm) + (Pgauge)
KI/r

23. heat required to change temperature of a substance
roegh
MC(deltaT)
n(Cv)(deltaT)
dSintheta=mwavelength

24. formula for finding the work function of a metal if the cutoff frequency is known
AV=(A2)(V2)
delta x = (Vo)t + .5at^2
h(Fo)
BLv

25. isobaric
sqrt(T/(m/))
constant pressure
h(Fo)
(1/Do) + (1/Di) = (1/f)

26. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
V = (Vo) + at
FV
KI/r
qV

27. formula for efficiency not using work out
deltaU -deltaW
((Qin) -(Qout))/(Qin)
KI/r
elastic collision

28. electric potential a distance r from a charge
KQ/r
roegh
frequency never changes for light problems
hc/wavelength

29. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
(No)(wavelength)=(Nn)(new wavelength)
e=mc^2
(3/2)nRdeltaT

30. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
L -LCostheta
(I^2)RT
roeVg
J= Ft

31. the electric force between two objects of charge Q
K |q||Q|/r^2
MC(deltaT)
(3/2)nRdeltaT
mgCostheta(mu)d

32. formula for impulse involving momentum
deltaU = deltaQ + deltaW
(Fn)(mu)
(N2)/(N1)
mV -m(Vo)

33. type of collision where K is not conserved
F/A
inelastic collision
(Fn)(mu)
mgCostheta(mu)d

34. formula for energy of a spring mass when spring is at maximum displacement
V^2=(Vo)^2 +2a*change in x
G M/((d/2)^2)
.5KA^2
rF

35. third kinematic
V^2=(Vo)^2 +2a*change in x
mgCostheta(mu)d
deltaU -deltaW
delta x = (Vo)t + .5at^2

36. velocity of waves on a string if tension is known
nSintheta=nsintheta
perfectly inelastic collision
sqrt(T/(m/))
-KA

37. first kinematic
V = (Vo) + at
frequency never changes for light problems
deltaU -deltaW
qVB

38. electric field in a distance r from a charge
(I^2)RT
k|Q|/r^2
((Qin) -(Qout))/(Qin)
E/B

39. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
V+IR
qrB/m
sqrt(T/(m/))

40. formula for buoyant force
deltaU -deltaW
G M/((d/2)^2)
roeVg
Columbs/second

41. heat required to melt a substance
M(Lf)
constant pressure
V = (Vo) + at
Columbs/second

42. natural frequency of a closed tube of length L
no heat flow
V = (Vo) + at
1/4wavelength
M(Lf)

43. total capacitance of capacitors in series
(3/2)nRdeltaT
KQ/r
no temp change
1/((1/C)+(1/C)..........)

44. force of gravity between two objects of mass m
FV
GM*M/(r^2)
elastic collision
0

45. new wavelength of light as it enters a new substance
(3/2)nRdeltaT
(Di)/(Do) or (Hi)/(Ho)
(No)(wavelength)=(Nn)(new wavelength)
AV=(A2)(V2)

46. heat during a cyclic process (net heat)
0
deltaU -deltaW
sqrt(T/(m/))
KQ/r

47. formula for power with current and voltage
no heat flow
(N2)/(N1)
VI
pL/A

48. formula equating energy and mass
e=mc^2
pL/A
mV -m(Vo)
no heat flow

49. formula for finding the momentum of a photon
F/A
qVB
h/wavelength
KQ/r

50. radius of curvature of a charged particle as it enters a uniform magnetic field
(Fn)(mu)
2nt=mwavelength
V = (Vo) + at
m(v^2)/qvB