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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. hooke's law force of a spring
K |q||Q|/r^2
mV -m(Vo)
-KA
Columbs/second

2. isobaric
constant pressure
(1/Do) + (1/Di) = (1/f)
0
V = (Vo) + at

3. force a charge in a Bfield
qE
mV -m(Vo)
(3/2)nRdeltaT
qVB

4. equation of continuity
(1/Do) + (1/Di) = (1/f)
AV=(A2)(V2)
no force (right hand rule)
2nt=mwavelength

5. radius of curvature of a charged particle as it enters a uniform magnetic field
elastic collision
1/4wavelength
m(v^2)/qvB
constant pressure

6. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
GM*M/(r^2)
F/A
M(Lf)
(hc/wavelength)=h(Fo) +(Vs)

7. pressure
F/A
pL/A
G M/((d/2)^2)
Ed=V

8. formula equating energy and mass
BA
qE
e=mc^2
.5KA^2

9. type of collision where K is not conserved
(I^2)RT
inelastic collision
(Di)/(Do) or (Hi)/(Ho)
joules/second

10. formula for torque
pL/A
E/B
((Qin) -(Qout))/(Qin)
rF

11. voltage induced in a rod moving through a uniform magnetic field
inelastic collision
(Patm) + (Pgauge)
BLv
(No)(wavelength)=(Nn)(new wavelength)

12. heat during a cyclic process (net heat)
(I^2)R
Joules/Columb
deltaU -deltaW
frequency never changes for light problems

13. formula for power with current and voltage
qV
VI
no heat flow
deltaU = deltaQ + deltaW

14. type of collision where objects stick togerther
(N2)/(N1)
e=mc^2
Ed=V
perfectly inelastic collision

15. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
V = (Vo) + at
G M/((d/2)^2)
Ed=V
qE

16. the electric force between two objects of charge Q
1/2wavelength
Ed=V
K |q||Q|/r^2
qVB

17. formula for centripetal acceleration
Q=CV
(hc/wavelength)=h(Fo) +(Vs)
1/((1/C)+(1/C)..........)
(V^2)/r

18. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
mgCostheta(mu)d
constant volume
qV
GM*M/(r^2)

19. new wavelength of light as it enters a new substance
FV
(No)(wavelength)=(Nn)(new wavelength)
constant pressure
2nt=mwavelength

20. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
2Pi * sqrt(l/g)
(V^2)/r
Joules/Columb

21. EMF of a battery having internal resistance R
(N2)/(N1)
V+IR
n(Cv)(deltaT)
qE

22. force of friction
(1/Do) + (1/Di) = (1/f)
FV
(Fn)(mu)
Q=CV

23. formula for constructive interference in a diffraction grating
1/4wavelength
(hc/wavelength)=h(Fo) +(Vs)
dSintheta=mwavelength
mV -m(Vo)

24. equation for the first law of thermodynamics
k|Q|/r^2
Joules/Columb
deltaU = deltaQ + deltaW
d/2

25. heat during an isometric process
sqrt(3KT/m)
constant pressure
n(Cv)(deltaT)
((Qin) -(Qout))/(Qin)

26. formula for energy of a spring mass when spring is at maximum displacement
mgCostheta(mu)d
e=mc^2
.5KA^2
qVB

27. velocity of an electrion as it exitws from the hole
(hc/wavelength)=h(Fo) +(Vs)
qrB/m
Columbs/second
((Qin) -(Qout))/(Qin)

28. the force on a charge moving parallel to a magnetic field
h/wavelength
(V^2)/r
roeVg
no force (right hand rule)

29. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
.5KA^2
J= Ft
V = (Vo) + at

30. velocity of waves on a string if tension is known
FV
sqrt(T/(m/))
BLv
KI/r

31. isothermal
constant volume
elastic collision
.5CV^2 or .5 Q^2/C or .5QV
no temp change

32. energy of a photon if wavelength is known
hc/wavelength
pL/A
0
BLv

33. first kinematic
M(Lf)
V = (Vo) + at
qE
KI/r

34. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
(EMF)Rt/10
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW

35. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
d/2
(Di)/(Do) or (Hi)/(Ho)
m(v^2)/qvB

36. forgotten power equation
J= Ft
inelastic collision
FV
(Fn)(mu)

37. formula for impluse involving time
rF
inelastic collision
V+IR
J= Ft

38. formula for charge stored in a capciator
sqrt(T/(m/))
no force (right hand rule)
Q=CV
E/B

39. formula for finding the work function of a metal if the cutoff frequency is known
no heat flow
sqrt(3KT/m)
h(Fo)
1/4wavelength

40. new frequency of light as it enters a new substance
frequency never changes for light problems
joules/second
constant pressure
roegh

41. the units of current other than amps
Columbs/second
VI
constant volume
V^2=(Vo)^2 +2a*change in x

42. heat required to change temperature of a substance
elastic collision
MC(deltaT)
Ed=V
Joules/Columb

43. velocity of a molecule of gas
VI
m(v^2)/qvB
mV -m(Vo)
sqrt(3KT/m)

44. formula for Carnot efficiency
qE
.5mV^2 + .5KA^2
delta x = (Vo)t + .5at^2
((Th) -(Tl))/(Th)

45. electric field in a distance r from a charge
Ed=V
m(v^2)/qvB
BA
k|Q|/r^2

46. isometric
(hc/wavelength)=h(Fo) +(Vs)
.5mV^2 + .5KA^2
Ed=V
constant volume

47. change in internal energy during a cyclic process
e=mc^2
deltaU -deltaW
roeVg
0

48. total capacitance of capacitors in series
deltaU -deltaW
mgCostheta(mu)d
qVB
1/((1/C)+(1/C)..........)

49. energy stored in a capacitor
1/4wavelength
deltaU = deltaQ + deltaW
.5CV^2 or .5 Q^2/C or .5QV
(I^2)R

50. what direction is friction?
.5KA^2
no force (right hand rule)
elastic collision
opposite motion