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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. velocity of waves on a string if tension is known
perfectly inelastic collision
sqrt(T/(m/))
(I^2)R
constant pressure

2. change in internal energy during a cyclic process
0
Columbs/second
((Qin) -(Qout))/(Qin)
no temp change

3. total capacitance of capacitors in series
roegh
K |q||Q|/r^2
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2

4. heat required to melt a substance
M(Lf)
qE
2nt=mwavelength
nSintheta=nsintheta

5. formula for buoyant force
roeVg
M(Lf)
.5mV^2 + .5KA^2
V+IR

6. EMF of a battery having internal resistance R
qrB/m
inelastic collision
V+IR
e=mc^2

7. the force on a charge moving parallel to a magnetic field
GM*M/(r^2)
no force (right hand rule)
k|Q|/r^2
((Th) -(Tl))/(Th)

8. the units of current other than amps
Columbs/second
(Wnet)/(Qin)
(1/Do) + (1/Di) = (1/f)
J= Ft

9. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
constant volume
dSintheta=mwavelength
(N2)/(N1)

10. formula for power with Voltage and resistance
(1/Do) + (1/Di) = (1/f)
n(Cv)(deltaT)
(V^2)/R
mgCostheta(mu)d

11. energy of a photon if wavelength is known
Ed=V
hc/wavelength
roegh
2Pi * sqrt(l/g)

12. resistance of a wire
k|Q|/r^2
(V^2)/R
pL/A
constant volume

13. electric potential a distance r from a charge
(N2)/(N1)
BA
h/wavelength
KQ/r

14. formula for finding the momentum of a photon
h/wavelength
roegh
(V^2)/R
1/((1/C)+(1/C)..........)

15. formula for period of a pendulum
2Pi * sqrt(l/g)
mV -m(Vo)
((Th) -(Tl))/(Th)
BA

16. type of collision where objects stick togerther
GM*M/(r^2)
qVB
perfectly inelastic collision
Columbs/second

17. formula for finding the work function of a metal if the cutoff frequency is known
(N2)/(N1)
h(Fo)
BLv
qE

18. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
.5KA^2
hc/wavelength
n(Cv)(deltaT)

19. formula for efficiency not using work out
Ed=V
1/2wavelength
frequency never changes for light problems
((Qin) -(Qout))/(Qin)

20. equation of continuity
V = (Vo) + at
dSintheta=mwavelength
h(Fo)
AV=(A2)(V2)

21. type of collision where K is conserved
elastic collision
MC(deltaT)
(N2)/(N1)
(EMF)Rt/10

22. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
FV
k|Q|/r^2
(EMF)Rt/10

23. formula for power with current and resistance
(I^2)R
inelastic collision
joules/second
GM*M/(r^2)

24. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
k|Q|/r^2
FV
G M/((d/2)^2)
no temp change

25. equation for the first law of thermodynamics
h/mv
qE
deltaU = deltaQ + deltaW
KQ/r

26. formula for constructive interference in a thin membrane with two phase changes
(EMF)Rt/10
KI/r
2nt=mwavelength
V+IR

27. the force on a charge in an electric field
roegh
qE
(I^2)RT
mV -m(Vo)

28. formula for efficiency of a heat engine using work out
(N2)/(N1)
(Wnet)/(Qin)
hc/wavelength
0

29. first kinematic
(Fn)(mu)
inelastic collision
qV
V = (Vo) + at

30. heat required to change temperature of a substance
roegh
n(Cv)(deltaT)
((Th) -(Tl))/(Th)
MC(deltaT)

31. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
sqrt(3KT/m)
constant volume
(Wnet)/(Qin)

32. formula for Carnot efficiency
frequency never changes for light problems
sqrt(T/(m/))
((Th) -(Tl))/(Th)
K |q||Q|/r^2

33. natural frequency of a closed tube of length L
opposite motion
(EMF)Rt/10
1/4wavelength
no temp change

34. adibatic
(EMF)Rt/10
no heat flow
no force (right hand rule)
d/2

35. heat during an isometric process
n(Cv)(deltaT)
.5CV^2 or .5 Q^2/C or .5QV
0
(I^2)RT

36. type of collision where K is not conserved
AV=(A2)(V2)
Ed=V
roegh
inelastic collision

37. formula for critical angle
constant volume
(N2)/(N1)
roeVg
hc/wavelength

38. formula for torque
qE
rF
0
1/4wavelength

39. voltage induced in a rod moving through a uniform magnetic field
BLv
perfectly inelastic collision
F/A
KQ/r

40. isobaric
constant pressure
no force (right hand rule)
BLv
(EMF)Rt/10

41. isometric
inelastic collision
constant volume
rF
roegh

42. the electric force between two objects of charge Q
BLv
deltaU -deltaW
joules/second
K |q||Q|/r^2

43. formula for impluse involving time
nSintheta=nsintheta
(Patm) + (Pgauge)
G M/((d/2)^2)
J= Ft

44. force a charge in a Bfield
mgCostheta(mu)d
qrB/m
(V^2)/r
qVB

45. formula for finding magnetic flux
V^2=(Vo)^2 +2a*change in x
(Fn)(mu)
BA
Q=CV

46. new frequency of light as it enters a new substance
E/B
(EMF)Rt/10
2Pi * sqrt(l/g)
frequency never changes for light problems

47. natural frequency of an open tube of length L
qE
Columbs/second
no temp change
1/2wavelength

48. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
deltaU = deltaQ + deltaW
qrB/m
(EMF)Rt/10
dSintheta=mwavelength

49. snells law
J= Ft
h/mv
nSintheta=nsintheta
constant volume

50. formula equating energy and mass
deltaU = deltaQ + deltaW
constant volume
e=mc^2
.5KA^2