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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.
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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 an electrion as it exitws from the hole
pL/A
KI/r
qrB/m
sqrt(3KT/m)

2. heat during a cyclic process (net heat)
deltaU -deltaW
pL/A
(Fn)(mu)
Columbs/second

3. formula for efficiency of a heat engine using work out
0
(Wnet)/(Qin)
G M/((d/2)^2)
(V^2)/r

4. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
L -LCostheta
V^2=(Vo)^2 +2a*change in x
(I^2)R

5. natural frequency of a closed tube of length L
1/4wavelength
.5mV^2 + .5KA^2
(1/Do) + (1/Di) = (1/f)
nSintheta=nsintheta

6. formula for efficiency not using work out
no force (right hand rule)
((Qin) -(Qout))/(Qin)
L -LCostheta
MC(deltaT)

7. energy of a photon if wavelength is known
elastic collision
E/B
hc/wavelength
V = (Vo) + at

8. formula for change in internal energy in a cosnstat volume PV process
m(v^2)/qvB
.5KA^2
joules/second
(3/2)nRdeltaT

9. adibatic
opposite motion
no heat flow
(V^2)/r
(Fn)(mu)

10. velocity of a molecule of gas
h/wavelength
sqrt(3KT/m)
(1/Do) + (1/Di) = (1/f)
qV

11. magnification equation
qVB
(Di)/(Do) or (Hi)/(Ho)
(No)(wavelength)=(Nn)(new wavelength)
elastic collision

12. units for voltage other than volts
V+IR
net work = delta K
Joules/Columb
(Fn)(mu)

13. formula for power with current and resistance
sqrt(3KT/m)
GM*M/(r^2)
(Fn)(mu)
(I^2)R

14. third kinematic
V^2=(Vo)^2 +2a*change in x
Joules/Columb
KI/r
qrB/m

15. formula for torque
rF
no heat flow
F/A
(3/2)nRdeltaT

16. formula for impluse involving time
J= Ft
MC(deltaT)
KQ/r
Joules/Columb

17. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
2nt=mwavelength
G M/((d/2)^2)
.5mV^2 + .5KA^2
(1/Do) + (1/Di) = (1/f)

18. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
joules/second
constant pressure
h/wavelength

19. equation for the first law of thermodynamics
sqrt(3KT/m)
h/wavelength
pL/A
deltaU = deltaQ + deltaW

20. formula for Carnot efficiency
(No)(wavelength)=(Nn)(new wavelength)
((Th) -(Tl))/(Th)
delta x = (Vo)t + .5at^2
AV=(A2)(V2)

21. hooke's law force of a spring
-KA
roegh
e=mc^2
roeVg

22. natural frequency of an open tube of length L
G M/((d/2)^2)
1/2wavelength
net work = delta K
Columbs/second

23. formula for finding the work function of a metal if the cutoff frequency is known
net work = delta K
sqrt(3KT/m)
dSintheta=mwavelength
h(Fo)

24. forgotten power equation
FV
.5mV^2 + .5KA^2
h(Fo)
(Di)/(Do) or (Hi)/(Ho)

25. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
(N2)/(N1)
Joules/Columb
k|Q|/r^2

26. force of gravity between two objects of mass m
GM*M/(r^2)
n(Cv)(deltaT)
qV
qrB/m

27. heat required to melt a substance
Joules/Columb
(Fn)(mu)
M(Lf)
qVB

28. type of collision where K is conserved
-KA
elastic collision
F/A
Joules/Columb

29. formula for centripetal acceleration
1/4wavelength
KQ/r
E/B
(V^2)/r

30. total capacitance of capacitors in series
VI
deltaU -deltaW
1/((1/C)+(1/C)..........)
2Pi * sqrt(l/g)

31. heat required to change temperature of a substance
MC(deltaT)
1/4wavelength
Columbs/second
roegh

32. formula for power with current and voltage
(EMF)Rt/10
((Th) -(Tl))/(Th)
elastic collision
VI

33. heat during an isometric process
Columbs/second
MC(deltaT)
n(Cv)(deltaT)
roegh

34. formula for buoyant force
(3/2)nRdeltaT
Columbs/second
roeVg
h(Fo)

35. equation of continuity
(N2)/(N1)
nSintheta=nsintheta
AV=(A2)(V2)
Joules/Columb

36. snells law
-KA
no temp change
deltaU = deltaQ + deltaW
nSintheta=nsintheta

37. isometric
joules/second
h/mv
constant volume
(hc/wavelength)=h(Fo) +(Vs)

38. new wavelength of light as it enters a new substance
(Wnet)/(Qin)
(No)(wavelength)=(Nn)(new wavelength)
e=mc^2
frequency never changes for light problems

39. formula for power with Voltage and resistance
FV
(V^2)/R
k|Q|/r^2
constant volume

40. formula for critical angle
nSintheta=nsintheta
h/mv
(N2)/(N1)
frequency never changes for light problems

41. focal length of a mirror with radius d
K |q||Q|/r^2
1/2wavelength
d/2
(hc/wavelength)=h(Fo) +(Vs)

42. force of frction on an incline
mgCostheta(mu)d
mV -m(Vo)
0
no force (right hand rule)

43. formula for the wavelength (debroglie wavelength) of a moving particle
FV
(N2)/(N1)
.5mV^2 + .5KA^2
h/mv

44. formula to find the gauge pressure at the bottom of a pool
(3/2)nRdeltaT
roegh
(Wnet)/(Qin)
net work = delta K

45. velocity of waves on a string if tension is known
constant volume
sqrt(T/(m/))
1/4wavelength
(V^2)/R

46. formula for constructive interference in a thin membrane with two phase changes
K |q||Q|/r^2
2Pi * sqrt(l/g)
2nt=mwavelength
((Th) -(Tl))/(Th)

47. formula for period of a pendulum
inelastic collision
mgCostheta(mu)d
constant volume
2Pi * sqrt(l/g)

48. isobaric
constant pressure
((Th) -(Tl))/(Th)
frequency never changes for light problems
(I^2)RT

49. resistance of a wire
pL/A
qVB
(I^2)R
frequency never changes for light problems

50. the force on a charge in an electric field
elastic collision
qE
.5KA^2
Joules/Columb