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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. heat required to change temperature of a substance
GM*M/(r^2)
m(v^2)/qvB
MC(deltaT)
delta x = (Vo)t + .5at^2

2. type of collision where K is conserved
(Fn)(mu)
elastic collision
d/2
F/A

3. formula for power with Voltage and resistance
(V^2)/R
(Fn)(mu)
h/mv
(I^2)RT

4. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
sqrt(3KT/m)
2nt=mwavelength
.5mV^2 + .5KA^2
(Di)/(Do) or (Hi)/(Ho)

5. formula for power with current and resistance
1/4wavelength
Joules/Columb
(I^2)R
AV=(A2)(V2)

6. formula for finding magnetic flux
joules/second
(V^2)/r
roeVg
BA

7. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
.5KA^2
roeVg
delta x = (Vo)t + .5at^2

8. formula for constructive interference in a thin membrane with two phase changes
constant pressure
2nt=mwavelength
(Fn)(mu)
no temp change

9. formula for height of the block (at the start of a pendulum string) in terms of theta and L
Ed=V
L -LCostheta
frequency never changes for light problems
e=mc^2

10. velocity of an electrion as it exitws from the hole
qrB/m
h/mv
(N2)/(N1)
(3/2)nRdeltaT

11. energy of a photon if wavelength is known
hc/wavelength
k|Q|/r^2
V = (Vo) + at
(Patm) + (Pgauge)

12. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
KQ/r
d/2
m(v^2)/qvB

13. force a charge in a Bfield
Ed=V
frequency never changes for light problems
qVB
roegh

14. heat during a cyclic process (net heat)
V = (Vo) + at
(I^2)R
deltaU -deltaW
(I^2)RT

15. formula for efficiency not using work out
h/mv
mgCostheta(mu)d
((Qin) -(Qout))/(Qin)
nSintheta=nsintheta

16. velocity of a molecule of gas
constant volume
sqrt(3KT/m)
0
nSintheta=nsintheta

17. pressure
(Di)/(Do) or (Hi)/(Ho)
F/A
roeVg
.5KA^2

18. the units of current other than amps
Columbs/second
V^2=(Vo)^2 +2a*change in x
(Fn)(mu)
.5CV^2 or .5 Q^2/C or .5QV

19. isobaric
MC(deltaT)
inelastic collision
constant pressure
(EMF)Rt/10

20. formula to find the absoluate pressure at the bottom of a pool
h/mv
e=mc^2
(Patm) + (Pgauge)
(No)(wavelength)=(Nn)(new wavelength)

21. isometric
(Patm) + (Pgauge)
constant volume
GM*M/(r^2)
0

22. formula for buoyant force
roeVg
roegh
M(Lf)
F/A

23. formula to find the gauge pressure at the bottom of a pool
no heat flow
roegh
Joules/Columb
1/((1/C)+(1/C)..........)

24. lens/mirror equation
Joules/Columb
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
(N2)/(N1)

25. formula for centripetal acceleration
h/wavelength
(Patm) + (Pgauge)
(V^2)/r
KI/r

26. total capacitance of capacitors in series
h/mv
no temp change
1/((1/C)+(1/C)..........)
inelastic collision

27. formula for period of a pendulum
E/B
(3/2)nRdeltaT
M(Lf)
2Pi * sqrt(l/g)

28. radius of curvature of a charged particle as it enters a uniform magnetic field
qE
KI/r
m(v^2)/qvB
hc/wavelength

29. units for voltage other than volts
.5CV^2 or .5 Q^2/C or .5QV
mV -m(Vo)
Joules/Columb
L -LCostheta

30. velocity of waves on a string if tension is known
nSintheta=nsintheta
sqrt(T/(m/))
MC(deltaT)
KQ/r

31. the force on a charge moving parallel to a magnetic field
(V^2)/r
delta x = (Vo)t + .5at^2
no force (right hand rule)
.5KA^2

32. formula for impluse involving time
h/mv
J= Ft
k|Q|/r^2
Columbs/second

33. hooke's law force of a spring
e=mc^2
V+IR
J= Ft
-KA

34. change in internal energy during a cyclic process
BLv
0
(Di)/(Do) or (Hi)/(Ho)
elastic collision

35. formula for Carnot efficiency
inelastic collision
no heat flow
((Th) -(Tl))/(Th)
constant volume

36. what direction is friction?
nSintheta=nsintheta
opposite motion
F/A
dSintheta=mwavelength

37. isothermal
(V^2)/R
no temp change
1/4wavelength
((Th) -(Tl))/(Th)

38. equation of continuity
KI/r
qV
qrB/m
AV=(A2)(V2)

39. formula for constructive interference in a diffraction grating
(Fn)(mu)
(I^2)R
.5mV^2 + .5KA^2
dSintheta=mwavelength

40. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
roeVg
.5KA^2
Q=CV
G M/((d/2)^2)

41. heat required to melt a substance
delta x = (Vo)t + .5at^2
M(Lf)
roegh
1/2wavelength

42. formula for change in internal energy in a cosnstat volume PV process
n(Cv)(deltaT)
pL/A
((Qin) -(Qout))/(Qin)
(3/2)nRdeltaT

43. first kinematic
Joules/Columb
V = (Vo) + at
2Pi * sqrt(l/g)
(EMF)Rt/10

44. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
joules/second
h/wavelength
(I^2)RT
h(Fo)

45. 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
hc/wavelength
F/A
roegh

46. the electric force between two objects of charge Q
(N2)/(N1)
L -LCostheta
KQ/r
K |q||Q|/r^2

47. formula equating energy and mass
joules/second
sqrt(3KT/m)
V^2=(Vo)^2 +2a*change in x
e=mc^2

48. work energy theorum
net work = delta K
AV=(A2)(V2)
BA
(Di)/(Do) or (Hi)/(Ho)

49. focal length of a mirror with radius d
E/B
perfectly inelastic collision
deltaU = deltaQ + deltaW
d/2

50. formula for power with current and voltage
(No)(wavelength)=(Nn)(new wavelength)
VI
delta x = (Vo)t + .5at^2
Ed=V

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AP Physics Formulas

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