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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. units for voltage other than volts
V = (Vo) + at
Columbs/second
Joules/Columb
pL/A

2. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
.5CV^2 or .5 Q^2/C or .5QV
inelastic collision
h/wavelength

3. force of frction on an incline
-KA
BA
deltaU = deltaQ + deltaW
mgCostheta(mu)d

4. formula to find the absoluate pressure at the bottom of a pool
opposite motion
(Patm) + (Pgauge)
e=mc^2
roeVg

5. new wavelength of light as it enters a new substance
mgCostheta(mu)d
(No)(wavelength)=(Nn)(new wavelength)
(V^2)/R
rF

6. formula for power with current and voltage
d/2
VI
elastic collision
no temp change

7. force of friction
deltaU -deltaW
(Fn)(mu)
d/2
h/wavelength

8. formula for constructive interference in a diffraction grating
m(v^2)/qvB
dSintheta=mwavelength
mV -m(Vo)
opposite motion

9. magnification equation
J= Ft
(Di)/(Do) or (Hi)/(Ho)
V^2=(Vo)^2 +2a*change in x
roeVg

10. formula for impluse involving time
net work = delta K
n(Cv)(deltaT)
J= Ft
qVB

11. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(V^2)/R
n(Cv)(deltaT)
E/B
(No)(wavelength)=(Nn)(new wavelength)

12. formula for charge stored in a capciator
qVB
Q=CV
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2

13. force a charge in a Bfield
L -LCostheta
dSintheta=mwavelength
qVB
h/wavelength

14. what direction is friction?
((Qin) -(Qout))/(Qin)
opposite motion
no heat flow
(3/2)nRdeltaT

15. natural frequency of an open tube of length L
(N2)/(N1)
AV=(A2)(V2)
(3/2)nRdeltaT
1/2wavelength

16. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
constant pressure
BA
G M/((d/2)^2)

17. velocity of a molecule of gas
sqrt(3KT/m)
perfectly inelastic collision
(No)(wavelength)=(Nn)(new wavelength)
(V^2)/R

18. forgotten power equation
roeVg
(3/2)nRdeltaT
d/2
FV

19. formula for efficiency not using work out
h/mv
(3/2)nRdeltaT
((Qin) -(Qout))/(Qin)
(hc/wavelength)=h(Fo) +(Vs)

20. formula for buoyant force
J= Ft
qrB/m
roeVg
rF

21. formula for energy of a spring mass when spring is at maximum displacement
MC(deltaT)
Joules/Columb
.5KA^2
(I^2)RT

22. resistance of a wire
(Patm) + (Pgauge)
pL/A
no heat flow
(V^2)/r

23. heat during an isometric process
(V^2)/R
n(Cv)(deltaT)
no heat flow
deltaU = deltaQ + deltaW

24. heat required to change temperature of a substance
1/4wavelength
no force (right hand rule)
sqrt(3KT/m)
MC(deltaT)

25. isometric
BLv
1/((1/C)+(1/C)..........)
constant volume
hc/wavelength

26. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
(I^2)RT
(V^2)/r
rF

27. electric field in a distance r from a charge
inelastic collision
((Th) -(Tl))/(Th)
sqrt(T/(m/))
k|Q|/r^2

28. formula for torque
J= Ft
Columbs/second
delta x = (Vo)t + .5at^2
rF

29. velocity of waves on a string if tension is known
mV -m(Vo)
sqrt(T/(m/))
deltaU -deltaW
GM*M/(r^2)

30. formula to find the gauge pressure at the bottom of a pool
J= Ft
roegh
sqrt(3KT/m)
VI

31. new frequency of light as it enters a new substance
frequency never changes for light problems
perfectly inelastic collision
e=mc^2
elastic collision

32. formula for finding the work function of a metal if the cutoff frequency is known
(V^2)/r
AV=(A2)(V2)
h(Fo)
G M/((d/2)^2)

33. formula for power with current and resistance
Joules/Columb
(I^2)R
(3/2)nRdeltaT
F/A

34. formula for finding magnetic flux
BA
qrB/m
(3/2)nRdeltaT
(V^2)/R

35. equation for the first law of thermodynamics
nSintheta=nsintheta
0
frequency never changes for light problems
deltaU = deltaQ + deltaW

36. change in internal energy during a cyclic process
BLv
K |q||Q|/r^2
h/wavelength
0

37. third kinematic
Joules/Columb
V^2=(Vo)^2 +2a*change in x
Columbs/second
(EMF)Rt/10

38. equation of continuity
0
constant pressure
GM*M/(r^2)
AV=(A2)(V2)

39. heat required to melt a substance
M(Lf)
elastic collision
inelastic collision
((Qin) -(Qout))/(Qin)

40. hooke's law force of a spring
(Di)/(Do) or (Hi)/(Ho)
no temp change
-KA
constant volume

41. focal length of a mirror with radius d
d/2
h(Fo)
1/4wavelength
FV

42. the units of current other than amps
net work = delta K
deltaU = deltaQ + deltaW
Columbs/second
(Di)/(Do) or (Hi)/(Ho)

43. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
joules/second
constant volume
F/A

44. snells law
perfectly inelastic collision
constant pressure
nSintheta=nsintheta
dSintheta=mwavelength

45. formula for change in internal energy in a cosnstat volume PV process
Columbs/second
(3/2)nRdeltaT
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2

46. voltage induced in a rod moving through a uniform magnetic field
pL/A
qrB/m
BLv
roegh

47. the units of power other than watts
((Qin) -(Qout))/(Qin)
(Di)/(Do) or (Hi)/(Ho)
joules/second
1/2wavelength

48. velocity of an electrion as it exitws from the hole
qrB/m
nSintheta=nsintheta
BLv
(I^2)RT

49. formula for power with Voltage and resistance
V = (Vo) + at
AV=(A2)(V2)
(V^2)/R
roeVg

50. isobaric
dSintheta=mwavelength
pL/A
mV -m(Vo)
constant pressure