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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 to find the absoluate pressure at the bottom of a pool
inelastic collision
(V^2)/r
1/2wavelength
(Patm) + (Pgauge)

2. change in internal energy during a cyclic process
mV -m(Vo)
V^2=(Vo)^2 +2a*change in x
0
V = (Vo) + at

3. formula for impluse involving time
J= Ft
no heat flow
V = (Vo) + at
n(Cv)(deltaT)

4. velocity of waves on a string if tension is known
sqrt(T/(m/))
rF
2nt=mwavelength
K |q||Q|/r^2

5. new frequency of light as it enters a new substance
VI
1/2wavelength
h/wavelength
frequency never changes for light problems

6. electric potential a distance r from a charge
k|Q|/r^2
J= Ft
KQ/r
Columbs/second

7. radius of curvature of a charged particle as it enters a uniform magnetic field
deltaU = deltaQ + deltaW
m(v^2)/qvB
no temp change
.5CV^2 or .5 Q^2/C or .5QV

8. formula for centripetal acceleration
(V^2)/r
hc/wavelength
F/A
MC(deltaT)

9. formula for efficiency not using work out
qrB/m
Columbs/second
((Qin) -(Qout))/(Qin)
elastic collision

10. total capacitance of capacitors in series
V+IR
mgCostheta(mu)d
1/((1/C)+(1/C)..........)
VI

11. natural frequency of a closed tube of length L
.5CV^2 or .5 Q^2/C or .5QV
h/mv
1/4wavelength
frequency never changes for light problems

12. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
VI
elastic collision
1/4wavelength

13. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
hc/wavelength
h/wavelength
net work = delta K
(EMF)Rt/10

14. formula for charge stored in a capciator
net work = delta K
Q=CV
Columbs/second
n(Cv)(deltaT)

15. the electric force between two objects of charge Q
Joules/Columb
G M/((d/2)^2)
qE
K |q||Q|/r^2

16. force of gravity between two objects of mass m
h/mv
frequency never changes for light problems
GM*M/(r^2)
(Wnet)/(Qin)

17. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
V^2=(Vo)^2 +2a*change in x
E/B
(Patm) + (Pgauge)
(3/2)nRdeltaT

18. formula for power with current and voltage
E/B
roeVg
KI/r
VI

19. heat during a cyclic process (net heat)
.5mV^2 + .5KA^2
deltaU -deltaW
V^2=(Vo)^2 +2a*change in x
qE

20. work energy theorum
FV
E/B
net work = delta K
J= Ft

21. second kinematic
V = (Vo) + at
(Wnet)/(Qin)
delta x = (Vo)t + .5at^2
deltaU -deltaW

22. type of collision where K is conserved
qV
h/wavelength
elastic collision
L -LCostheta

23. EMF of a battery having internal resistance R
V+IR
-KA
(V^2)/r
hc/wavelength

24. formula for critical angle
V^2=(Vo)^2 +2a*change in x
(No)(wavelength)=(Nn)(new wavelength)
deltaU -deltaW
(N2)/(N1)

25. natural frequency of an open tube of length L
mgCostheta(mu)d
BLv
perfectly inelastic collision
1/2wavelength

26. formula for Carnot efficiency
constant pressure
elastic collision
((Th) -(Tl))/(Th)
2nt=mwavelength

27. formula for energy of a spring mass when spring is at maximum displacement
F/A
BLv
e=mc^2
.5KA^2

28. snells law
(hc/wavelength)=h(Fo) +(Vs)
(EMF)Rt/10
nSintheta=nsintheta
((Qin) -(Qout))/(Qin)

29. what direction is friction?
frequency never changes for light problems
opposite motion
elastic collision
(V^2)/r

30. formula for torque
qE
sqrt(T/(m/))
(V^2)/R
rF

31. equation for the first law of thermodynamics
(I^2)R
nSintheta=nsintheta
sqrt(T/(m/))
deltaU = deltaQ + deltaW

32. formula for efficiency of a heat engine using work out
roeVg
(Wnet)/(Qin)
qV
(No)(wavelength)=(Nn)(new wavelength)

33. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
m(v^2)/qvB
G M/((d/2)^2)
Ed=V
(Di)/(Do) or (Hi)/(Ho)

34. energy of a photon if wavelength is known
roegh
(3/2)nRdeltaT
hc/wavelength
qrB/m

35. units for voltage other than volts
F/A
(Patm) + (Pgauge)
Joules/Columb
h/mv

36. voltage induced in a rod moving through a uniform magnetic field
frequency never changes for light problems
n(Cv)(deltaT)
net work = delta K
BLv

37. new wavelength of light as it enters a new substance
no force (right hand rule)
rF
(No)(wavelength)=(Nn)(new wavelength)
inelastic collision

38. heat required to change temperature of a substance
MC(deltaT)
K |q||Q|/r^2
0
AV=(A2)(V2)

39. formula for change in internal energy in a cosnstat volume PV process
constant pressure
Columbs/second
.5mV^2 + .5KA^2
(3/2)nRdeltaT

40. energy stored in a capacitor
(Wnet)/(Qin)
.5CV^2 or .5 Q^2/C or .5QV
opposite motion
sqrt(T/(m/))

41. formula equating energy and mass
e=mc^2
(hc/wavelength)=h(Fo) +(Vs)
Q=CV
KQ/r

42. formula for power with current and resistance
joules/second
(I^2)R
(Patm) + (Pgauge)
0

43. lens/mirror equation
mV -m(Vo)
n(Cv)(deltaT)
(1/Do) + (1/Di) = (1/f)
net work = delta K

44. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(N2)/(N1)
2Pi * sqrt(l/g)
.5mV^2 + .5KA^2
mV -m(Vo)

45. formula for finding the momentum of a photon
pL/A
h/wavelength
BLv
nSintheta=nsintheta

46. formula for period of a pendulum
2Pi * sqrt(l/g)
Q=CV
(I^2)R
(Di)/(Do) or (Hi)/(Ho)

47. focal length of a mirror with radius d
deltaU -deltaW
GM*M/(r^2)
.5mV^2 + .5KA^2
d/2

48. equation of continuity
AV=(A2)(V2)
h/mv
no temp change
deltaU -deltaW

49. type of collision where K is not conserved
BLv
inelastic collision
MC(deltaT)
qVB

50. magnification equation
.5KA^2
joules/second
(Di)/(Do) or (Hi)/(Ho)
dSintheta=mwavelength