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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. forgotten power equation
K |q||Q|/r^2
1/((1/C)+(1/C)..........)
FV
Ed=V

2. formula relating voltage and electric field
qE
G M/((d/2)^2)
Ed=V
Joules/Columb

3. formula for power with current and resistance
GM*M/(r^2)
(I^2)R
(Patm) + (Pgauge)
e=mc^2

4. formula for efficiency of a heat engine using work out
L -LCostheta
(Wnet)/(Qin)
KQ/r
inelastic collision

5. formula for finding the momentum of a photon
perfectly inelastic collision
(I^2)R
rF
h/wavelength

6. formula for the wavelength (debroglie wavelength) of a moving particle
roeVg
((Qin) -(Qout))/(Qin)
net work = delta K
h/mv

7. snells law
nSintheta=nsintheta
1/((1/C)+(1/C)..........)
inelastic collision
joules/second

8. heat during an isometric process
inelastic collision
n(Cv)(deltaT)
(3/2)nRdeltaT
G M/((d/2)^2)

9. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
((Th) -(Tl))/(Th)
sqrt(T/(m/))
no force (right hand rule)
.5mV^2 + .5KA^2

10. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
roeVg
F/A
net work = delta K

11. formula for impulse involving momentum
M(Lf)
mV -m(Vo)
VI
qVB

12. formula for period of a pendulum
2Pi * sqrt(l/g)
deltaU = deltaQ + deltaW
(V^2)/R
inelastic collision

13. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
e=mc^2
((Qin) -(Qout))/(Qin)
Ed=V
qV

14. velocity of an electrion as it exitws from the hole
rF
V+IR
sqrt(T/(m/))
qrB/m

15. hooke's law force of a spring
-KA
Q=CV
no force (right hand rule)
1/4wavelength

16. voltage induced in a rod moving through a uniform magnetic field
BLv
.5CV^2 or .5 Q^2/C or .5QV
1/2wavelength
inelastic collision

17. formula for critical angle
2nt=mwavelength
deltaU -deltaW
(N2)/(N1)
G M/((d/2)^2)

18. pressure
KI/r
F/A
sqrt(T/(m/))
sqrt(3KT/m)

19. formula for power with Voltage and resistance
V = (Vo) + at
MC(deltaT)
roegh
(V^2)/R

20. type of collision where K is not conserved
k|Q|/r^2
(V^2)/R
frequency never changes for light problems
inelastic collision

21. velocity of a molecule of gas
.5KA^2
h(Fo)
(V^2)/r
sqrt(3KT/m)

22. isometric
mgCostheta(mu)d
qV
constant volume
deltaU = deltaQ + deltaW

23. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
qrB/m
(EMF)Rt/10
.5KA^2
E/B

24. formula for buoyant force
.5KA^2
BA
roeVg
0

25. first kinematic
V = (Vo) + at
frequency never changes for light problems
1/((1/C)+(1/C)..........)
M(Lf)

26. magnification equation
0
(Di)/(Do) or (Hi)/(Ho)
no temp change
(3/2)nRdeltaT

27. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(I^2)R
k|Q|/r^2
Joules/Columb
(EMF)Rt/10

28. heat during a cyclic process (net heat)
2nt=mwavelength
deltaU -deltaW
1/2wavelength
1/4wavelength

29. new frequency of light as it enters a new substance
(I^2)R
joules/second
frequency never changes for light problems
(1/Do) + (1/Di) = (1/f)

30. formula to find the gauge pressure at the bottom of a pool
roegh
0
dSintheta=mwavelength
h/wavelength

31. formula for impluse involving time
2nt=mwavelength
net work = delta K
J= Ft
qVB

32. formula for finding the work function of a metal if the cutoff frequency is known
(Fn)(mu)
Ed=V
h(Fo)
Q=CV

33. formula for finding the magnetic field a distance r from a current carrying wire
h/wavelength
1/4wavelength
KI/r
BA

34. formula for torque
((Th) -(Tl))/(Th)
rF
qV
-KA

35. new wavelength of light as it enters a new substance
2nt=mwavelength
(No)(wavelength)=(Nn)(new wavelength)
(EMF)Rt/10
(V^2)/r

36. force of gravity between two objects of mass m
(I^2)R
hc/wavelength
no temp change
GM*M/(r^2)

37. heat required to melt a substance
M(Lf)
.5mV^2 + .5KA^2
h(Fo)
joules/second

38. formula for efficiency not using work out
(I^2)RT
((Qin) -(Qout))/(Qin)
2Pi * sqrt(l/g)
net work = delta K

39. force a charge in a Bfield
(Di)/(Do) or (Hi)/(Ho)
BLv
qVB
(EMF)Rt/10

40. lens/mirror equation
no temp change
(1/Do) + (1/Di) = (1/f)
GM*M/(r^2)
(EMF)Rt/10

41. type of collision where K is conserved
2nt=mwavelength
Columbs/second
FV
elastic collision

42. formula for finding magnetic flux
qE
BA
KQ/r
2nt=mwavelength

43. change in internal energy during a cyclic process
.5mV^2 + .5KA^2
FV
0
Ed=V

44. units for voltage other than volts
Q=CV
J= Ft
Joules/Columb
(No)(wavelength)=(Nn)(new wavelength)

45. the units of power other than watts
d/2
joules/second
mV -m(Vo)
qV

46. energy of a photon if wavelength is known
(3/2)nRdeltaT
hc/wavelength
d/2
J= Ft

47. formula for charge stored in a capciator
roeVg
Q=CV
(1/Do) + (1/Di) = (1/f)
((Qin) -(Qout))/(Qin)

48. the force on a charge moving parallel to a magnetic field
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)
no force (right hand rule)
k|Q|/r^2

49. what direction is friction?
opposite motion
d/2
KQ/r
1/4wavelength

50. third kinematic
V^2=(Vo)^2 +2a*change in x
(No)(wavelength)=(Nn)(new wavelength)
L -LCostheta
.5KA^2