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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. formula for efficiency not using work out
(Wnet)/(Qin)
delta x = (Vo)t + .5at^2
no force (right hand rule)
((Qin) -(Qout))/(Qin)

2. formula for impulse involving momentum
roeVg
mV -m(Vo)
deltaU = deltaQ + deltaW
no heat flow

3. focal length of a mirror with radius d
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)
d/2
no force (right hand rule)

4. natural frequency of an open tube of length L
1/2wavelength
(I^2)R
Joules/Columb
V+IR

5. electric field in a distance r from a charge
pL/A
KI/r
k|Q|/r^2
(N2)/(N1)

6. magnification equation
.5CV^2 or .5 Q^2/C or .5QV
sqrt(T/(m/))
h/mv
(Di)/(Do) or (Hi)/(Ho)

7. force of frction on an incline
(1/Do) + (1/Di) = (1/f)
deltaU = deltaQ + deltaW
(EMF)Rt/10
mgCostheta(mu)d

8. equation of continuity
AV=(A2)(V2)
KQ/r
(3/2)nRdeltaT
(I^2)RT

9. the force on a charge in an electric field
opposite motion
no temp change
qE
FV

10. equation for the first law of thermodynamics
qE
(I^2)RT
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW

11. first kinematic
h/mv
roegh
(1/Do) + (1/Di) = (1/f)
V = (Vo) + at

12. radius of curvature of a charged particle as it enters a uniform magnetic field
pL/A
m(v^2)/qvB
FV
perfectly inelastic collision

13. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
K |q||Q|/r^2
G M/((d/2)^2)
e=mc^2
(EMF)Rt/10

14. formula for constructive interference in a diffraction grating
hc/wavelength
dSintheta=mwavelength
1/2wavelength
V^2=(Vo)^2 +2a*change in x

15. formula relating voltage and electric field
sqrt(T/(m/))
((Qin) -(Qout))/(Qin)
Ed=V
(Wnet)/(Qin)

16. formula for centripetal acceleration
frequency never changes for light problems
(hc/wavelength)=h(Fo) +(Vs)
(V^2)/r
elastic collision

17. forgotten power equation
qV
KQ/r
.5mV^2 + .5KA^2
FV

18. type of collision where K is not conserved
2Pi * sqrt(l/g)
Joules/Columb
inelastic collision
G M/((d/2)^2)

19. force of gravity between two objects of mass m
GM*M/(r^2)
.5KA^2
V = (Vo) + at
constant volume

20. isothermal
(N2)/(N1)
dSintheta=mwavelength
(Patm) + (Pgauge)
no temp change

21. formula for change in internal energy in a cosnstat volume PV process
mgCostheta(mu)d
(I^2)RT
(3/2)nRdeltaT
(hc/wavelength)=h(Fo) +(Vs)

22. heat during an isometric process
sqrt(T/(m/))
no heat flow
n(Cv)(deltaT)
qrB/m

23. second kinematic
sqrt(3KT/m)
Ed=V
(3/2)nRdeltaT
delta x = (Vo)t + .5at^2

24. resistance of a wire
1/((1/C)+(1/C)..........)
roeVg
.5KA^2
pL/A

25. formula for critical angle
E/B
(N2)/(N1)
KI/r
(EMF)Rt/10

26. formula for height of the block (at the start of a pendulum string) in terms of theta and L
n(Cv)(deltaT)
(N2)/(N1)
L -LCostheta
J= Ft

27. formula for period of a pendulum
2Pi * sqrt(l/g)
M(Lf)
constant volume
net work = delta K

28. type of collision where K is conserved
elastic collision
nSintheta=nsintheta
L -LCostheta
joules/second

29. formula to find the absoluate pressure at the bottom of a pool
KQ/r
h(Fo)
qVB
(Patm) + (Pgauge)

30. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
deltaU -deltaW
BA
V+IR

31. formula for power with current and voltage
no force (right hand rule)
(I^2)R
VI
2Pi * sqrt(l/g)

32. formula for charge stored in a capciator
K |q||Q|/r^2
.5KA^2
Q=CV
mV -m(Vo)

33. force a charge in a Bfield
constant volume
qVB
qV
(No)(wavelength)=(Nn)(new wavelength)

34. formula for power with current and resistance
(I^2)R
Q=CV
(Di)/(Do) or (Hi)/(Ho)
pL/A

35. formula for finding the magnetic field a distance r from a current carrying wire
mgCostheta(mu)d
KI/r
qE
(3/2)nRdeltaT

36. energy stored in a capacitor
deltaU -deltaW
.5CV^2 or .5 Q^2/C or .5QV
(3/2)nRdeltaT
no temp change

37. pressure
qrB/m
Q=CV
mV -m(Vo)
F/A

38. change in internal energy during a cyclic process
0
hc/wavelength
(No)(wavelength)=(Nn)(new wavelength)
net work = delta K

39. formula for constructive interference in a thin membrane with two phase changes
2Pi * sqrt(l/g)
mV -m(Vo)
GM*M/(r^2)
2nt=mwavelength

40. formula for finding the momentum of a photon
Joules/Columb
perfectly inelastic collision
AV=(A2)(V2)
h/wavelength

41. adibatic
VI
KQ/r
rF
no heat flow

42. isometric
(Wnet)/(Qin)
sqrt(3KT/m)
V = (Vo) + at
constant volume

43. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
h(Fo)
e=mc^2
((Th) -(Tl))/(Th)
qV

44. formula to find the gauge pressure at the bottom of a pool
frequency never changes for light problems
constant pressure
nSintheta=nsintheta
roegh

45. lens/mirror equation
qVB
(1/Do) + (1/Di) = (1/f)
deltaU -deltaW
V^2=(Vo)^2 +2a*change in x

46. energy of a photon if wavelength is known
V+IR
no temp change
hc/wavelength
(I^2)RT

47. heat required to melt a substance
0
M(Lf)
deltaU -deltaW
Columbs/second

48. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
(Patm) + (Pgauge)
V^2=(Vo)^2 +2a*change in x
Q=CV

49. isobaric
roegh
(EMF)Rt/10
constant pressure
(hc/wavelength)=h(Fo) +(Vs)

50. formula for Carnot efficiency
((Th) -(Tl))/(Th)
(3/2)nRdeltaT
frequency never changes for light problems
deltaU = deltaQ + deltaW