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AP Physics Formulas

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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. energy of a photon if wavelength is known
V^2=(Vo)^2 +2a*change in x
BLv
V = (Vo) + at
hc/wavelength

2. force a charge in a Bfield
qVB
deltaU = deltaQ + deltaW
constant pressure
.5KA^2

3. work energy theorum
V = (Vo) + at
perfectly inelastic collision
G M/((d/2)^2)
net work = delta K

4. type of collision where K is conserved
elastic collision
FV
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2

5. heat during an isometric process
net work = delta K
n(Cv)(deltaT)
roegh
inelastic collision

6. radius of curvature of a charged particle as it enters a uniform magnetic field
Columbs/second
(3/2)nRdeltaT
(V^2)/r
m(v^2)/qvB

7. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
(I^2)RT
rF
inelastic collision

8. formula relating voltage and electric field
Ed=V
G M/((d/2)^2)
-KA
L -LCostheta

9. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
.5CV^2 or .5 Q^2/C or .5QV
E/B
BA
mgCostheta(mu)d

10. the electric force between two objects of charge Q
((Qin) -(Qout))/(Qin)
h/wavelength
K |q||Q|/r^2
mgCostheta(mu)d

11. force of frction on an incline
(N2)/(N1)
opposite motion
mgCostheta(mu)d
Q=CV

12. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
n(Cv)(deltaT)
G M/((d/2)^2)
roeVg
((Qin) -(Qout))/(Qin)

13. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
mV -m(Vo)
MC(deltaT)
d/2

14. snells law
V = (Vo) + at
mgCostheta(mu)d
((Th) -(Tl))/(Th)
nSintheta=nsintheta

15. natural frequency of an open tube of length L
1/4wavelength
FV
(Di)/(Do) or (Hi)/(Ho)
1/2wavelength

16. heat required to change temperature of a substance
1/2wavelength
m(v^2)/qvB
E/B
MC(deltaT)

17. voltage induced in a rod moving through a uniform magnetic field
n(Cv)(deltaT)
k|Q|/r^2
BLv
inelastic collision

18. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
(N2)/(N1)
(Di)/(Do) or (Hi)/(Ho)
Joules/Columb

19. new wavelength of light as it enters a new substance
no heat flow
BLv
(No)(wavelength)=(Nn)(new wavelength)
net work = delta K

20. total capacitance of capacitors in series
qE
h(Fo)
1/((1/C)+(1/C)..........)
roeVg

21. hooke's law force of a spring
(Fn)(mu)
qVB
no temp change
-KA

22. formula to find the absoluate pressure at the bottom of a pool
Q=CV
(Patm) + (Pgauge)
h/wavelength
2Pi * sqrt(l/g)

23. formula for efficiency not using work out
-KA
FV
G M/((d/2)^2)
((Qin) -(Qout))/(Qin)

24. pressure
1/2wavelength
roeVg
F/A
h/mv

25. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
dSintheta=mwavelength
no heat flow
BLv

26. forgotten power equation
sqrt(3KT/m)
(I^2)R
FV
no force (right hand rule)

27. second kinematic
Q=CV
h(Fo)
delta x = (Vo)t + .5at^2
rF

28. formula for Carnot efficiency
sqrt(T/(m/))
(Patm) + (Pgauge)
roeVg
((Th) -(Tl))/(Th)

29. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
opposite motion
(3/2)nRdeltaT
2Pi * sqrt(l/g)

30. type of collision where objects stick togerther
mV -m(Vo)
perfectly inelastic collision
.5mV^2 + .5KA^2
opposite motion

31. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
deltaU -deltaW
roeVg
Joules/Columb

32. third kinematic
2Pi * sqrt(l/g)
qE
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV

33. velocity of an electrion as it exitws from the hole
V^2=(Vo)^2 +2a*change in x
(1/Do) + (1/Di) = (1/f)
qrB/m
(Di)/(Do) or (Hi)/(Ho)

34. formula for centripetal acceleration
sqrt(T/(m/))
(V^2)/r
(Di)/(Do) or (Hi)/(Ho)
G M/((d/2)^2)

35. formula for finding magnetic flux
(V^2)/R
BA
constant volume
qVB

36. energy stored in a capacitor
BLv
F/A
.5CV^2 or .5 Q^2/C or .5QV
h(Fo)

37. the units of current other than amps
Columbs/second
2Pi * sqrt(l/g)
KI/r
Joules/Columb

38. electric potential a distance r from a charge
(3/2)nRdeltaT
1/2wavelength
joules/second
KQ/r

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

40. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
FV
V^2=(Vo)^2 +2a*change in x
.5mV^2 + .5KA^2
(I^2)RT

41. formula for impluse involving time
(V^2)/r
1/4wavelength
J= Ft
Joules/Columb

42. resistance of a wire
constant pressure
no heat flow
pL/A
(V^2)/r

43. formula equating energy and mass
(1/Do) + (1/Di) = (1/f)
roeVg
e=mc^2
qVB

44. type of collision where K is not conserved
inelastic collision
(1/Do) + (1/Di) = (1/f)
(Wnet)/(Qin)
L -LCostheta

45. heat required to melt a substance
frequency never changes for light problems
BA
(N2)/(N1)
M(Lf)

46. isobaric
MC(deltaT)
constant pressure
qVB
(Di)/(Do) or (Hi)/(Ho)

47. formula for buoyant force
deltaU -deltaW
roeVg
0
mgCostheta(mu)d

48. formula for constructive interference in a diffraction grating
opposite motion
h(Fo)
dSintheta=mwavelength
deltaU -deltaW

49. formula for period of a pendulum
2Pi * sqrt(l/g)
(N2)/(N1)
Ed=V
BLv

50. the force on a charge in an electric field
qE
((Qin) -(Qout))/(Qin)
((Th) -(Tl))/(Th)
no force (right hand rule)

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AP Physics Formulas

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