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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. energy of a photon if wavelength is known
constant pressure
no temp change
(hc/wavelength)=h(Fo) +(Vs)
hc/wavelength

2. the force on a charge in an electric field
G M/((d/2)^2)
(1/Do) + (1/Di) = (1/f)
(V^2)/R
qE

3. velocity of waves on a string if tension is known
Joules/Columb
perfectly inelastic collision
V+IR
sqrt(T/(m/))

4. formula for efficiency not using work out
k|Q|/r^2
qV
n(Cv)(deltaT)
((Qin) -(Qout))/(Qin)

5. formula for buoyant force
roeVg
K |q||Q|/r^2
V^2=(Vo)^2 +2a*change in x
(Patm) + (Pgauge)

6. EMF of a battery having internal resistance R
perfectly inelastic collision
V+IR
1/((1/C)+(1/C)..........)
1/2wavelength

7. formula for change in internal energy in a cosnstat volume PV process
(V^2)/r
h/mv
(3/2)nRdeltaT
MC(deltaT)

8. equation of continuity
V^2=(Vo)^2 +2a*change in x
AV=(A2)(V2)
deltaU = deltaQ + deltaW
delta x = (Vo)t + .5at^2

9. hooke's law force of a spring
GM*M/(r^2)
h(Fo)
(N2)/(N1)
-KA

10. isometric
rF
mV -m(Vo)
qV
constant volume

11. magnification equation
BLv
inelastic collision
frequency never changes for light problems
(Di)/(Do) or (Hi)/(Ho)

12. force of gravity between two objects of mass m
GM*M/(r^2)
(Di)/(Do) or (Hi)/(Ho)
E/B
J= Ft

13. formula for period of a pendulum
MC(deltaT)
2Pi * sqrt(l/g)
V^2=(Vo)^2 +2a*change in x
.5mV^2 + .5KA^2

14. type of collision where K is not conserved
0
qVB
inelastic collision
AV=(A2)(V2)

15. the units of power other than watts
joules/second
2Pi * sqrt(l/g)
V+IR
h(Fo)

16. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
((Qin) -(Qout))/(Qin)
E/B
KQ/r
(3/2)nRdeltaT

17. electric field in a distance r from a charge
k|Q|/r^2
deltaU -deltaW
G M/((d/2)^2)
m(v^2)/qvB

18. total capacitance of capacitors in series
no force (right hand rule)
Joules/Columb
FV
1/((1/C)+(1/C)..........)

19. formula for the wavelength (debroglie wavelength) of a moving particle
sqrt(T/(m/))
h(Fo)
h/mv
(Wnet)/(Qin)

20. velocity of a molecule of gas
sqrt(T/(m/))
(EMF)Rt/10
sqrt(3KT/m)
no force (right hand rule)

21. lens/mirror equation
net work = delta K
(1/Do) + (1/Di) = (1/f)
V = (Vo) + at
MC(deltaT)

22. formula for finding the work function of a metal if the cutoff frequency is known
AV=(A2)(V2)
h(Fo)
hc/wavelength
Joules/Columb

23. force of frction on an incline
Columbs/second
joules/second
mgCostheta(mu)d
qE

24. electric potential a distance r from a charge
(No)(wavelength)=(Nn)(new wavelength)
((Qin) -(Qout))/(Qin)
KQ/r
FV

25. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
no temp change
E/B
F/A

26. natural frequency of an open tube of length L
Joules/Columb
1/2wavelength
(Fn)(mu)
M(Lf)

27. formula for charge stored in a capciator
rF
Ed=V
Q=CV
1/((1/C)+(1/C)..........)

28. formula for power with current and voltage
(hc/wavelength)=h(Fo) +(Vs)
mgCostheta(mu)d
VI
d/2

29. formula for centripetal acceleration
GM*M/(r^2)
(I^2)R
F/A
(V^2)/r

30. heat required to change temperature of a substance
-KA
MC(deltaT)
perfectly inelastic collision
dSintheta=mwavelength

31. force of friction
(Fn)(mu)
hc/wavelength
2Pi * sqrt(l/g)
net work = delta K

32. formula for Carnot efficiency
Ed=V
(I^2)RT
h/mv
((Th) -(Tl))/(Th)

33. isothermal
sqrt(T/(m/))
(Wnet)/(Qin)
no temp change
qE

34. type of collision where K is conserved
elastic collision
no temp change
mV -m(Vo)
(Di)/(Do) or (Hi)/(Ho)

35. type of collision where objects stick togerther
perfectly inelastic collision
FV
0
(V^2)/r

36. the electric force between two objects of charge Q
((Th) -(Tl))/(Th)
deltaU = deltaQ + deltaW
K |q||Q|/r^2
(Wnet)/(Qin)

37. force a charge in a Bfield
GM*M/(r^2)
(Wnet)/(Qin)
pL/A
qVB

38. formula for critical angle
2nt=mwavelength
rF
(N2)/(N1)
BA

39. new frequency of light as it enters a new substance
(Wnet)/(Qin)
m(v^2)/qvB
1/2wavelength
frequency never changes for light problems

40. formula for impluse involving time
(I^2)R
rF
(3/2)nRdeltaT
J= Ft

41. formula to find the gauge pressure at the bottom of a pool
roegh
qE
V = (Vo) + at
no force (right hand rule)

42. heat during an isometric process
perfectly inelastic collision
1/4wavelength
n(Cv)(deltaT)
.5CV^2 or .5 Q^2/C or .5QV

43. the force on a charge moving parallel to a magnetic field
pL/A
no force (right hand rule)
.5KA^2
no heat flow

44. velocity of an electrion as it exitws from the hole
Ed=V
qrB/m
opposite motion
qVB

45. formula for height of the block (at the start of a pendulum string) in terms of theta and L
net work = delta K
deltaU = deltaQ + deltaW
(Patm) + (Pgauge)
L -LCostheta

46. first kinematic
J= Ft
BA
roeVg
V = (Vo) + at

47. heat required to melt a substance
.5CV^2 or .5 Q^2/C or .5QV
M(Lf)
(I^2)RT
Ed=V

48. snells law
nSintheta=nsintheta
h/wavelength
perfectly inelastic collision
1/4wavelength

49. voltage induced in a rod moving through a uniform magnetic field
2Pi * sqrt(l/g)
d/2
FV
BLv

50. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
m(v^2)/qvB
(hc/wavelength)=h(Fo) +(Vs)
.5KA^2