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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. focal length of a mirror with radius d
deltaU -deltaW
d/2
(No)(wavelength)=(Nn)(new wavelength)
(EMF)Rt/10

2. type of collision where objects stick togerther
mgCostheta(mu)d
perfectly inelastic collision
V = (Vo) + at
V^2=(Vo)^2 +2a*change in x

3. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
qV
.5mV^2 + .5KA^2
2Pi * sqrt(l/g)
rF

4. isobaric
constant pressure
(V^2)/R
h(Fo)
GM*M/(r^2)

5. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
qVB
Ed=V
roegh
(EMF)Rt/10

6. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
mV -m(Vo)
constant volume

7. formula for height of the block (at the start of a pendulum string) in terms of theta and L
(Fn)(mu)
(EMF)Rt/10
K |q||Q|/r^2
L -LCostheta

8. formula for Carnot efficiency
((Th) -(Tl))/(Th)
V+IR
n(Cv)(deltaT)
pL/A

9. force of friction
(Fn)(mu)
V+IR
M(Lf)
sqrt(3KT/m)

10. formula for finding the work function of a metal if the cutoff frequency is known
1/4wavelength
h(Fo)
(V^2)/R
m(v^2)/qvB

11. heat during a cyclic process (net heat)
nSintheta=nsintheta
d/2
deltaU -deltaW
(Di)/(Do) or (Hi)/(Ho)

12. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
rF
perfectly inelastic collision
qE

13. radius of curvature of a charged particle as it enters a uniform magnetic field
L -LCostheta
-KA
m(v^2)/qvB
KI/r

14. voltage induced in a rod moving through a uniform magnetic field
BLv
J= Ft
deltaU -deltaW
Joules/Columb

15. formula for efficiency of a heat engine using work out
L -LCostheta
(EMF)Rt/10
(Wnet)/(Qin)
(N2)/(N1)

16. change in internal energy during a cyclic process
0
(N2)/(N1)
1/((1/C)+(1/C)..........)
deltaU = deltaQ + deltaW

17. the units of power other than watts
FV
L -LCostheta
joules/second
qE

18. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
no temp change
L -LCostheta
perfectly inelastic collision
(I^2)RT

19. natural frequency of an open tube of length L
rF
-KA
VI
1/2wavelength

20. the force on a charge in an electric field
h/mv
pL/A
qE
MC(deltaT)

21. type of collision where K is conserved
deltaU = deltaQ + deltaW
KI/r
.5KA^2
elastic collision

22. isometric
Columbs/second
h/wavelength
constant volume
pL/A

23. formula for efficiency not using work out
delta x = (Vo)t + .5at^2
((Qin) -(Qout))/(Qin)
2Pi * sqrt(l/g)
deltaU -deltaW

24. isothermal
KQ/r
no temp change
qrB/m
2Pi * sqrt(l/g)

25. formula for finding magnetic flux
h/wavelength
(I^2)RT
BA
qV

26. formula for torque
rF
MC(deltaT)
(Fn)(mu)
constant volume

27. the electric force between two objects of charge Q
E/B
e=mc^2
2Pi * sqrt(l/g)
K |q||Q|/r^2

28. velocity of an electrion as it exitws from the hole
qrB/m
Columbs/second
frequency never changes for light problems
E/B

29. energy of a photon if wavelength is known
hc/wavelength
(3/2)nRdeltaT
KQ/r
sqrt(3KT/m)

30. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
qE
hc/wavelength
V = (Vo) + at

31. heat required to melt a substance
no heat flow
(hc/wavelength)=h(Fo) +(Vs)
d/2
M(Lf)

32. formula for critical angle
(I^2)R
m(v^2)/qvB
M(Lf)
(N2)/(N1)

33. formula for finding the momentum of a photon
h/wavelength
delta x = (Vo)t + .5at^2
2Pi * sqrt(l/g)
.5KA^2

34. formula for power with current and resistance
(I^2)R
qV
V+IR
Joules/Columb

35. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
frequency never changes for light problems
qV
VI
pL/A

36. velocity of a molecule of gas
V = (Vo) + at
sqrt(3KT/m)
net work = delta K
(EMF)Rt/10

37. energy stored in a capacitor
nSintheta=nsintheta
.5CV^2 or .5 Q^2/C or .5QV
h(Fo)
K |q||Q|/r^2

38. natural frequency of a closed tube of length L
m(v^2)/qvB
1/4wavelength
h/wavelength
F/A

39. third kinematic
E/B
(Wnet)/(Qin)
V^2=(Vo)^2 +2a*change in x
k|Q|/r^2

40. heat during an isometric process
J= Ft
n(Cv)(deltaT)
((Th) -(Tl))/(Th)
(V^2)/R

41. heat required to change temperature of a substance
qrB/m
roeVg
MC(deltaT)
qV

42. the force on a charge moving parallel to a magnetic field
nSintheta=nsintheta
no force (right hand rule)
.5CV^2 or .5 Q^2/C or .5QV
no heat flow

43. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
joules/second
perfectly inelastic collision
h(Fo)

44. what direction is friction?
inelastic collision
opposite motion
mV -m(Vo)
delta x = (Vo)t + .5at^2

45. the units of current other than amps
BA
Columbs/second
((Qin) -(Qout))/(Qin)
V = (Vo) + at

46. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
F/A
opposite motion
deltaU -deltaW

47. formula for power with Voltage and resistance
-KA
no heat flow
BA
(V^2)/R

48. formula for finding the magnetic field a distance r from a current carrying wire
(No)(wavelength)=(Nn)(new wavelength)
KI/r
e=mc^2
h/wavelength

49. units for voltage other than volts
qV
Joules/Columb
h/wavelength
dSintheta=mwavelength

50. new wavelength of light as it enters a new substance
(1/Do) + (1/Di) = (1/f)
(3/2)nRdeltaT
V+IR
(No)(wavelength)=(Nn)(new wavelength)