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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
((Qin) -(Qout))/(Qin)
qE
.5CV^2 or .5 Q^2/C or .5QV
(N2)/(N1)

2. focal length of a mirror with radius d
Columbs/second
d/2
L -LCostheta
VI

3. new wavelength of light as it enters a new substance
h/mv
deltaU = deltaQ + deltaW
.5KA^2
(No)(wavelength)=(Nn)(new wavelength)

4. formula for impulse involving momentum
((Qin) -(Qout))/(Qin)
(EMF)Rt/10
mV -m(Vo)
mgCostheta(mu)d

5. magnification equation
no heat flow
(Di)/(Do) or (Hi)/(Ho)
FV
.5KA^2

6. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
perfectly inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
Columbs/second
Q=CV

7. formula for power with current and resistance
(Fn)(mu)
(I^2)R
constant volume
(No)(wavelength)=(Nn)(new wavelength)

8. formula for Carnot efficiency
hc/wavelength
h(Fo)
((Th) -(Tl))/(Th)
.5KA^2

9. the electric force between two objects of charge Q
K |q||Q|/r^2
nSintheta=nsintheta
((Qin) -(Qout))/(Qin)
GM*M/(r^2)

10. energy of a photon if wavelength is known
qE
no temp change
(Fn)(mu)
hc/wavelength

11. forgotten power equation
FV
deltaU -deltaW
V = (Vo) + at
joules/second

12. formula for constructive interference in a diffraction grating
mV -m(Vo)
BA
dSintheta=mwavelength
1/2wavelength

13. resistance of a wire
sqrt(3KT/m)
pL/A
constant volume
GM*M/(r^2)

14. lens/mirror equation
hc/wavelength
elastic collision
joules/second
(1/Do) + (1/Di) = (1/f)

15. units for voltage other than volts
BA
dSintheta=mwavelength
M(Lf)
Joules/Columb

16. electric field in a distance r from a charge
.5mV^2 + .5KA^2
2Pi * sqrt(l/g)
k|Q|/r^2
.5KA^2

17. 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
d/2
(1/Do) + (1/Di) = (1/f)
(Fn)(mu)

18. formula for change in internal energy in a cosnstat volume PV process
F/A
Joules/Columb
joules/second
(3/2)nRdeltaT

19. formula for finding the momentum of a photon
2Pi * sqrt(l/g)
constant volume
h/wavelength
no heat flow

20. formula for finding magnetic flux
constant volume
(Patm) + (Pgauge)
(Wnet)/(Qin)
BA

21. equation of continuity
AV=(A2)(V2)
Ed=V
1/4wavelength
n(Cv)(deltaT)

22. formula for power with current and voltage
Q=CV
nSintheta=nsintheta
K |q||Q|/r^2
VI

23. type of collision where objects stick togerther
perfectly inelastic collision
joules/second
constant pressure
BLv

24. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
h/wavelength
Joules/Columb
E/B
h(Fo)

25. new frequency of light as it enters a new substance
frequency never changes for light problems
nSintheta=nsintheta
Q=CV
mV -m(Vo)

26. heat required to melt a substance
dSintheta=mwavelength
(I^2)R
M(Lf)
V = (Vo) + at

27. natural frequency of a closed tube of length L
Ed=V
2Pi * sqrt(l/g)
d/2
1/4wavelength

28. the units of current other than amps
dSintheta=mwavelength
inelastic collision
(V^2)/r
Columbs/second

29. isometric
constant volume
(1/Do) + (1/Di) = (1/f)
mV -m(Vo)
2nt=mwavelength

30. velocity of a molecule of gas
sqrt(T/(m/))
inelastic collision
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)

31. formula for power with Voltage and resistance
net work = delta K
(V^2)/R
.5CV^2 or .5 Q^2/C or .5QV
(N2)/(N1)

32. velocity of an electrion as it exitws from the hole
joules/second
.5KA^2
qrB/m
AV=(A2)(V2)

33. what direction is friction?
.5CV^2 or .5 Q^2/C or .5QV
opposite motion
h/wavelength
GM*M/(r^2)

34. EMF of a battery having internal resistance R
V+IR
((Th) -(Tl))/(Th)
rF
(1/Do) + (1/Di) = (1/f)

35. isobaric
1/4wavelength
dSintheta=mwavelength
constant pressure
roegh

36. force of frction on an incline
mgCostheta(mu)d
rF
K |q||Q|/r^2
.5CV^2 or .5 Q^2/C or .5QV

37. third kinematic
V^2=(Vo)^2 +2a*change in x
L -LCostheta
(EMF)Rt/10
sqrt(3KT/m)

38. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
1/4wavelength
2Pi * sqrt(l/g)
h/wavelength

39. velocity of waves on a string if tension is known
deltaU = deltaQ + deltaW
qVB
(3/2)nRdeltaT
sqrt(T/(m/))

40. second kinematic
k|Q|/r^2
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
V+IR

41. formula for charge stored in a capciator
Q=CV
(N2)/(N1)
(3/2)nRdeltaT
K |q||Q|/r^2

42. formula for torque
rF
(1/Do) + (1/Di) = (1/f)
(Di)/(Do) or (Hi)/(Ho)
Q=CV

43. formula for impluse involving time
1/4wavelength
G M/((d/2)^2)
J= Ft
KI/r

44. natural frequency of an open tube of length L
dSintheta=mwavelength
AV=(A2)(V2)
1/2wavelength
joules/second

45. formula relating voltage and electric field
Ed=V
net work = delta K
(Fn)(mu)
roegh

46. snells law
.5KA^2
no heat flow
1/((1/C)+(1/C)..........)
nSintheta=nsintheta

47. formula for height of the block (at the start of a pendulum string) in terms of theta and L
KQ/r
L -LCostheta
K |q||Q|/r^2
hc/wavelength

48. the force on a charge in an electric field
net work = delta K
qE
(N2)/(N1)
roegh

49. type of collision where K is not conserved
E/B
Q=CV
inelastic collision
(V^2)/R

50. heat during a cyclic process (net heat)
deltaU -deltaW
-KA
(Wnet)/(Qin)
d/2