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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. velocity of an electrion as it exitws from the hole
qrB/m
L -LCostheta
Q=CV
(EMF)Rt/10

2. what direction is friction?
h(Fo)
opposite motion
M(Lf)
-KA

3. formula relating voltage and electric field
Ed=V
1/4wavelength
((Qin) -(Qout))/(Qin)
constant pressure

4. formula for period of a pendulum
mgCostheta(mu)d
(Di)/(Do) or (Hi)/(Ho)
2Pi * sqrt(l/g)
d/2

5. pressure
m(v^2)/qvB
no temp change
(I^2)R
F/A

6. units for voltage other than volts
rF
sqrt(T/(m/))
Joules/Columb
qrB/m

7. formula for efficiency of a heat engine using work out
2Pi * sqrt(l/g)
(Wnet)/(Qin)
qVB
(I^2)R

8. formula for power with current and resistance
rF
constant volume
1/4wavelength
(I^2)R

9. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
V+IR
1/2wavelength
constant volume
(EMF)Rt/10

10. formula for buoyant force
(I^2)R
(N2)/(N1)
((Th) -(Tl))/(Th)
roeVg

11. formula for critical angle
hc/wavelength
(N2)/(N1)
G M/((d/2)^2)
V+IR

12. isothermal
sqrt(T/(m/))
perfectly inelastic collision
qE
no temp change

13. type of collision where objects stick togerther
roegh
qrB/m
perfectly inelastic collision
V = (Vo) + at

14. formula for power with Voltage and resistance
h/mv
e=mc^2
(V^2)/R
hc/wavelength

15. first kinematic
V = (Vo) + at
Ed=V
(No)(wavelength)=(Nn)(new wavelength)
.5mV^2 + .5KA^2

16. formula for Carnot efficiency
m(v^2)/qvB
((Th) -(Tl))/(Th)
Q=CV
(3/2)nRdeltaT

17. formula for torque
rF
2Pi * sqrt(l/g)
qVB
F/A

18. heat during a cyclic process (net heat)
deltaU -deltaW
F/A
-KA
elastic collision

19. type of collision where K is not conserved
roegh
(hc/wavelength)=h(Fo) +(Vs)
2nt=mwavelength
inelastic collision

20. force a charge in a Bfield
L -LCostheta
FV
2nt=mwavelength
qVB

21. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(I^2)R
roegh
k|Q|/r^2
E/B

22. energy of a photon if wavelength is known
.5KA^2
hc/wavelength
no force (right hand rule)
(No)(wavelength)=(Nn)(new wavelength)

23. formula for finding the momentum of a photon
h/wavelength
h/mv
KQ/r
AV=(A2)(V2)

24. the force on a charge moving parallel to a magnetic field
nSintheta=nsintheta
G M/((d/2)^2)
no force (right hand rule)
m(v^2)/qvB

25. second kinematic
m(v^2)/qvB
2nt=mwavelength
J= Ft
delta x = (Vo)t + .5at^2

26. formula for finding magnetic flux
BA
VI
(hc/wavelength)=h(Fo) +(Vs)
(Di)/(Do) or (Hi)/(Ho)

27. electric field in a distance r from a charge
(hc/wavelength)=h(Fo) +(Vs)
KQ/r
k|Q|/r^2
0

28. focal length of a mirror with radius d
constant volume
K |q||Q|/r^2
V = (Vo) + at
d/2

29. hooke's law force of a spring
MC(deltaT)
-KA
delta x = (Vo)t + .5at^2
Ed=V

30. force of friction
(1/Do) + (1/Di) = (1/f)
h(Fo)
(Patm) + (Pgauge)
(Fn)(mu)

31. heat required to change temperature of a substance
Joules/Columb
constant volume
MC(deltaT)
FV

32. forgotten power equation
(Wnet)/(Qin)
(EMF)Rt/10
net work = delta K
FV

33. equation of continuity
frequency never changes for light problems
1/2wavelength
AV=(A2)(V2)
J= Ft

34. type of collision where K is conserved
elastic collision
perfectly inelastic collision
net work = delta K
1/4wavelength

35. heat during an isometric process
n(Cv)(deltaT)
sqrt(T/(m/))
e=mc^2
qE

36. change in internal energy during a cyclic process
hc/wavelength
((Qin) -(Qout))/(Qin)
qVB
0

37. 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
V^2=(Vo)^2 +2a*change in x
KQ/r
k|Q|/r^2

38. work energy theorum
net work = delta K
GM*M/(r^2)
frequency never changes for light problems
e=mc^2

39. magnification equation
(Di)/(Do) or (Hi)/(Ho)
1/((1/C)+(1/C)..........)
(3/2)nRdeltaT
pL/A

40. formula for finding the magnetic field a distance r from a current carrying wire
0
MC(deltaT)
(Di)/(Do) or (Hi)/(Ho)
KI/r

41. formula for constructive interference in a diffraction grating
VI
dSintheta=mwavelength
qrB/m
BLv

42. formula for power with current and voltage
VI
KI/r
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2

43. natural frequency of a closed tube of length L
joules/second
1/4wavelength
elastic collision
1/2wavelength

44. electric potential a distance r from a charge
MC(deltaT)
KQ/r
h(Fo)
(No)(wavelength)=(Nn)(new wavelength)

45. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(hc/wavelength)=h(Fo) +(Vs)
M(Lf)
G M/((d/2)^2)
(No)(wavelength)=(Nn)(new wavelength)

46. new wavelength of light as it enters a new substance
n(Cv)(deltaT)
qrB/m
(No)(wavelength)=(Nn)(new wavelength)
joules/second

47. adibatic
no heat flow
FV
qVB
-KA

48. formula for height of the block (at the start of a pendulum string) in terms of theta and L
(I^2)R
Ed=V
delta x = (Vo)t + .5at^2
L -LCostheta

49. the force on a charge in an electric field
J= Ft
hc/wavelength
VI
qE

50. radius of curvature of a charged particle as it enters a uniform magnetic field
elastic collision
m(v^2)/qvB
L -LCostheta
perfectly inelastic collision