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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 finding the work function of a metal if the cutoff frequency is known
F/A
no temp change
h(Fo)
(Wnet)/(Qin)

2. the units of power other than watts
h/wavelength
.5mV^2 + .5KA^2
deltaU = deltaQ + deltaW
joules/second

3. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
h(Fo)
(3/2)nRdeltaT
AV=(A2)(V2)

4. new wavelength of light as it enters a new substance
nSintheta=nsintheta
qE
(No)(wavelength)=(Nn)(new wavelength)
L -LCostheta

5. adibatic
joules/second
no heat flow
no temp change
F/A

6. units for voltage other than volts
(hc/wavelength)=h(Fo) +(Vs)
Ed=V
joules/second
Joules/Columb

7. change in internal energy during a cyclic process
delta x = (Vo)t + .5at^2
0
L -LCostheta
BLv

8. lens/mirror equation
FV
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
delta x = (Vo)t + .5at^2

9. second kinematic
2Pi * sqrt(l/g)
roeVg
hc/wavelength
delta x = (Vo)t + .5at^2

10. voltage induced in a rod moving through a uniform magnetic field
(3/2)nRdeltaT
MC(deltaT)
BLv
e=mc^2

11. isobaric
(Patm) + (Pgauge)
hc/wavelength
constant pressure
Joules/Columb

12. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
V^2=(Vo)^2 +2a*change in x
hc/wavelength
opposite motion
E/B

13. formula for Carnot efficiency
((Th) -(Tl))/(Th)
V^2=(Vo)^2 +2a*change in x
h/mv
F/A

14. formula for impulse involving momentum
mV -m(Vo)
opposite motion
KQ/r
inelastic collision

15. forgotten power equation
FV
(Di)/(Do) or (Hi)/(Ho)
KQ/r
sqrt(T/(m/))

16. energy stored in a capacitor
Joules/Columb
roegh
no force (right hand rule)
.5CV^2 or .5 Q^2/C or .5QV

17. the force on a charge in an electric field
h/wavelength
qE
n(Cv)(deltaT)
V = (Vo) + at

18. formula for charge stored in a capciator
Q=CV
2nt=mwavelength
1/4wavelength
m(v^2)/qvB

19. new frequency of light as it enters a new substance
1/2wavelength
d/2
frequency never changes for light problems
(N2)/(N1)

20. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(hc/wavelength)=h(Fo) +(Vs)
nSintheta=nsintheta
qV
m(v^2)/qvB

21. formula to find the gauge pressure at the bottom of a pool
(Patm) + (Pgauge)
d/2
roegh
GM*M/(r^2)

22. type of collision where K is conserved
Columbs/second
elastic collision
V^2=(Vo)^2 +2a*change in x
h/mv

23. type of collision where objects stick togerther
perfectly inelastic collision
deltaU -deltaW
.5CV^2 or .5 Q^2/C or .5QV
K |q||Q|/r^2

24. formula relating voltage and electric field
J= Ft
BLv
Ed=V
GM*M/(r^2)

25. isometric
constant volume
delta x = (Vo)t + .5at^2
h(Fo)
(Wnet)/(Qin)

26. electric potential a distance r from a charge
Columbs/second
KQ/r
(Fn)(mu)
1/2wavelength

27. formula for finding magnetic flux
(N2)/(N1)
BA
Joules/Columb
n(Cv)(deltaT)

28. formula for efficiency not using work out
.5KA^2
(Patm) + (Pgauge)
((Qin) -(Qout))/(Qin)
k|Q|/r^2

29. velocity of a molecule of gas
deltaU = deltaQ + deltaW
sqrt(3KT/m)
roegh
hc/wavelength

30. formula for energy of a spring mass when spring is at maximum displacement
(Di)/(Do) or (Hi)/(Ho)
.5KA^2
e=mc^2
sqrt(T/(m/))

31. natural frequency of a closed tube of length L
rF
delta x = (Vo)t + .5at^2
roegh
1/4wavelength

32. velocity of an electrion as it exitws from the hole
.5mV^2 + .5KA^2
qrB/m
k|Q|/r^2
rF

33. electric field in a distance r from a charge
k|Q|/r^2
J= Ft
net work = delta K
MC(deltaT)

34. formula for power with current and resistance
(I^2)R
(1/Do) + (1/Di) = (1/f)
no temp change
(No)(wavelength)=(Nn)(new wavelength)

35. total capacitance of capacitors in series
BA
1/((1/C)+(1/C)..........)
no heat flow
(I^2)R

36. EMF of a battery having internal resistance R
KQ/r
joules/second
Ed=V
V+IR

37. force of frction on an incline
no force (right hand rule)
dSintheta=mwavelength
mgCostheta(mu)d
V = (Vo) + at

38. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
1/2wavelength
0
L -LCostheta
(I^2)RT

39. formula for the wavelength (debroglie wavelength) of a moving particle
h/wavelength
V+IR
KQ/r
h/mv

40. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(Wnet)/(Qin)
BLv
(EMF)Rt/10
roegh

41. heat during an isometric process
inelastic collision
pL/A
n(Cv)(deltaT)
.5mV^2 + .5KA^2

42. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
e=mc^2
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW
GM*M/(r^2)

43. velocity of waves on a string if tension is known
sqrt(T/(m/))
Q=CV
hc/wavelength
.5CV^2 or .5 Q^2/C or .5QV

44. the electric force between two objects of charge Q
V^2=(Vo)^2 +2a*change in x
frequency never changes for light problems
m(v^2)/qvB
K |q||Q|/r^2

45. formula for period of a pendulum
AV=(A2)(V2)
2Pi * sqrt(l/g)
.5mV^2 + .5KA^2
(V^2)/R

46. formula for torque
E/B
sqrt(T/(m/))
rF
perfectly inelastic collision

47. formula to find the absoluate pressure at the bottom of a pool
0
(Patm) + (Pgauge)
Q=CV
(V^2)/R

48. snells law
joules/second
nSintheta=nsintheta
dSintheta=mwavelength
sqrt(3KT/m)

49. work energy theorum
G M/((d/2)^2)
Ed=V
net work = delta K
dSintheta=mwavelength

50. formula for power with current and voltage
V^2=(Vo)^2 +2a*change in x
VI
KQ/r
.5KA^2