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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. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
(Di)/(Do) or (Hi)/(Ho)
(Wnet)/(Qin)
-KA

2. heat during a cyclic process (net heat)
.5CV^2 or .5 Q^2/C or .5QV
G M/((d/2)^2)
deltaU -deltaW
((Qin) -(Qout))/(Qin)

3. force a charge in a Bfield
L -LCostheta
qVB
h/mv
d/2

4. second kinematic
joules/second
n(Cv)(deltaT)
e=mc^2
delta x = (Vo)t + .5at^2

5. EMF of a battery having internal resistance R
constant volume
V+IR
1/2wavelength
(Fn)(mu)

6. units for voltage other than volts
Joules/Columb
Ed=V
sqrt(T/(m/))
V+IR

7. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
e=mc^2
no force (right hand rule)
delta x = (Vo)t + .5at^2

8. hooke's law force of a spring
-KA
deltaU = deltaQ + deltaW
(1/Do) + (1/Di) = (1/f)
Q=CV

9. formula for critical angle
M(Lf)
(I^2)R
hc/wavelength
(N2)/(N1)

10. type of collision where objects stick togerther
perfectly inelastic collision
(EMF)Rt/10
0
GM*M/(r^2)

11. formula for centripetal acceleration
J= Ft
(V^2)/r
F/A
roeVg

12. formula for power with current and voltage
k|Q|/r^2
perfectly inelastic collision
VI
KI/r

13. electric field in a distance r from a charge
Q=CV
(No)(wavelength)=(Nn)(new wavelength)
V^2=(Vo)^2 +2a*change in x
k|Q|/r^2

14. natural frequency of a closed tube of length L
1/4wavelength
G M/((d/2)^2)
mV -m(Vo)
(3/2)nRdeltaT

15. formula equating energy and mass
e=mc^2
h/wavelength
L -LCostheta
inelastic collision

16. isothermal
no temp change
pL/A
opposite motion
dSintheta=mwavelength

17. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
h/mv
qE
((Qin) -(Qout))/(Qin)

18. magnification equation
(Di)/(Do) or (Hi)/(Ho)
pL/A
rF
(EMF)Rt/10

19. 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
roegh
Columbs/second
-KA

20. formula to find the absoluate pressure at the bottom of a pool
V = (Vo) + at
deltaU = deltaQ + deltaW
(Patm) + (Pgauge)
(Wnet)/(Qin)

21. formula to find the gauge pressure at the bottom of a pool
(hc/wavelength)=h(Fo) +(Vs)
joules/second
roegh
deltaU = deltaQ + deltaW

22. velocity of waves on a string if tension is known
sqrt(T/(m/))
delta x = (Vo)t + .5at^2
(Di)/(Do) or (Hi)/(Ho)
Columbs/second

23. total capacitance of capacitors in series
KI/r
MC(deltaT)
1/((1/C)+(1/C)..........)
((Qin) -(Qout))/(Qin)

24. formula for finding the magnetic field a distance r from a current carrying wire
F/A
nSintheta=nsintheta
BLv
KI/r

25. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
(Di)/(Do) or (Hi)/(Ho)
1/((1/C)+(1/C)..........)
2nt=mwavelength

26. formula for impulse involving momentum
mV -m(Vo)
(V^2)/R
sqrt(3KT/m)
Columbs/second

27. formula for finding magnetic flux
(I^2)RT
V = (Vo) + at
BA
hc/wavelength

28. isobaric
elastic collision
FV
(Wnet)/(Qin)
constant pressure

29. the force on a charge moving parallel to a magnetic field
V^2=(Vo)^2 +2a*change in x
no heat flow
no force (right hand rule)
((Th) -(Tl))/(Th)

30. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
qE
dSintheta=mwavelength
(No)(wavelength)=(Nn)(new wavelength)

31. natural frequency of an open tube of length L
Columbs/second
h/mv
k|Q|/r^2
1/2wavelength

32. formula for torque
h/wavelength
rF
K |q||Q|/r^2
opposite motion

33. heat required to change temperature of a substance
(3/2)nRdeltaT
AV=(A2)(V2)
K |q||Q|/r^2
MC(deltaT)

34. formula for power with current and resistance
(N2)/(N1)
deltaU = deltaQ + deltaW
(I^2)R
no force (right hand rule)

35. forgotten power equation
rF
FV
inelastic collision
1/2wavelength

36. formula for finding the momentum of a photon
qV
((Th) -(Tl))/(Th)
h/wavelength
(3/2)nRdeltaT

37. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
elastic collision
E/B
opposite motion
(EMF)Rt/10

38. force of friction
h(Fo)
KQ/r
2nt=mwavelength
(Fn)(mu)

39. what direction is friction?
deltaU = deltaQ + deltaW
V+IR
opposite motion
mgCostheta(mu)d

40. equation of continuity
AV=(A2)(V2)
MC(deltaT)
(1/Do) + (1/Di) = (1/f)
(Di)/(Do) or (Hi)/(Ho)

41. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
GM*M/(r^2)
J= Ft
(hc/wavelength)=h(Fo) +(Vs)
((Th) -(Tl))/(Th)

42. adibatic
perfectly inelastic collision
KQ/r
constant volume
no heat flow

43. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
nSintheta=nsintheta
(EMF)Rt/10
G M/((d/2)^2)

44. velocity of a molecule of gas
1/2wavelength
(I^2)RT
sqrt(3KT/m)
BA

45. formula for buoyant force
roeVg
(I^2)RT
h/mv
opposite motion

46. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
V^2=(Vo)^2 +2a*change in x
FV
qV
elastic collision

47. pressure
(N2)/(N1)
V = (Vo) + at
F/A
AV=(A2)(V2)

48. formula for power with Voltage and resistance
no temp change
KQ/r
(I^2)RT
(V^2)/R

49. new frequency of light as it enters a new substance
dSintheta=mwavelength
frequency never changes for light problems
hc/wavelength
h/wavelength

50. type of collision where K is not conserved
GM*M/(r^2)
inelastic collision
K |q||Q|/r^2
roeVg