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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. hooke's law force of a spring
-KA
mgCostheta(mu)d
BA
roeVg

2. formula for constructive interference in a diffraction grating
(I^2)R
dSintheta=mwavelength
Q=CV
G M/((d/2)^2)

3. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
1/4wavelength
perfectly inelastic collision
(Fn)(mu)

4. pressure
KI/r
F/A
E/B
(3/2)nRdeltaT

5. formula for Carnot efficiency
h/wavelength
((Th) -(Tl))/(Th)
(V^2)/R
2Pi * sqrt(l/g)

6. the force on a charge in an electric field
(I^2)RT
(3/2)nRdeltaT
FV
qE

7. isobaric
((Th) -(Tl))/(Th)
no heat flow
(1/Do) + (1/Di) = (1/f)
constant pressure

8. electric potential a distance r from a charge
F/A
e=mc^2
frequency never changes for light problems
KQ/r

9. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
V = (Vo) + at
qV
frequency never changes for light problems

10. formula for impluse involving time
BA
(Wnet)/(Qin)
J= Ft
(No)(wavelength)=(Nn)(new wavelength)

11. formula for change in internal energy in a cosnstat volume PV process
V^2=(Vo)^2 +2a*change in x
-KA
(3/2)nRdeltaT
(Di)/(Do) or (Hi)/(Ho)

12. work energy theorum
deltaU -deltaW
Q=CV
elastic collision
net work = delta K

13. energy of a photon if wavelength is known
perfectly inelastic collision
hc/wavelength
.5mV^2 + .5KA^2
Ed=V

14. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
constant pressure
BA
.5KA^2

15. lens/mirror equation
VI
(1/Do) + (1/Di) = (1/f)
(V^2)/R
Q=CV

16. snells law
G M/((d/2)^2)
M(Lf)
(Di)/(Do) or (Hi)/(Ho)
nSintheta=nsintheta

17. the electric force between two objects of charge Q
AV=(A2)(V2)
deltaU -deltaW
1/4wavelength
K |q||Q|/r^2

18. magnification equation
(Fn)(mu)
e=mc^2
(Di)/(Do) or (Hi)/(Ho)
GM*M/(r^2)

19. energy stored in a capacitor
deltaU = deltaQ + deltaW
k|Q|/r^2
.5CV^2 or .5 Q^2/C or .5QV
h/wavelength

20. the force on a charge moving parallel to a magnetic field
KQ/r
1/2wavelength
no force (right hand rule)
hc/wavelength

21. formula for energy of a spring mass when spring is at maximum displacement
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)
net work = delta K
.5KA^2

22. formula for finding magnetic flux
BA
net work = delta K
n(Cv)(deltaT)
delta x = (Vo)t + .5at^2

23. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
h/mv
(V^2)/R
1/2wavelength

24. type of collision where K is not conserved
J= Ft
.5CV^2 or .5 Q^2/C or .5QV
inelastic collision
GM*M/(r^2)

25. formula for height of the block (at the start of a pendulum string) in terms of theta and L
V = (Vo) + at
KQ/r
qrB/m
L -LCostheta

26. equation of continuity
BLv
opposite motion
elastic collision
AV=(A2)(V2)

27. force of friction
((Th) -(Tl))/(Th)
(Wnet)/(Qin)
mV -m(Vo)
(Fn)(mu)

28. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
-KA
rF
.5mV^2 + .5KA^2
h/wavelength

29. what direction is friction?
(I^2)R
2nt=mwavelength
opposite motion
(Fn)(mu)

30. heat during a cyclic process (net heat)
mV -m(Vo)
K |q||Q|/r^2
deltaU -deltaW
(V^2)/R

31. formula for impulse involving momentum
inelastic collision
mV -m(Vo)
(V^2)/r
net work = delta K

32. second kinematic
E/B
Ed=V
VI
delta x = (Vo)t + .5at^2

33. formula for efficiency not using work out
frequency never changes for light problems
((Qin) -(Qout))/(Qin)
(I^2)RT
BLv

34. resistance of a wire
pL/A
Columbs/second
sqrt(3KT/m)
no heat flow

35. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
sqrt(T/(m/))
joules/second
.5KA^2

36. adibatic
no heat flow
(Patm) + (Pgauge)
2nt=mwavelength
(Wnet)/(Qin)

37. formula for finding the momentum of a photon
h/wavelength
perfectly inelastic collision
0
(Di)/(Do) or (Hi)/(Ho)

38. velocity of waves on a string if tension is known
sqrt(T/(m/))
(Fn)(mu)
opposite motion
net work = delta K

39. voltage induced in a rod moving through a uniform magnetic field
2Pi * sqrt(l/g)
d/2
1/((1/C)+(1/C)..........)
BLv

40. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
pL/A
n(Cv)(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
Q=CV

41. isothermal
AV=(A2)(V2)
M(Lf)
pL/A
no temp change

42. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(EMF)Rt/10
frequency never changes for light problems
(I^2)RT
K |q||Q|/r^2

43. natural frequency of an open tube of length L
1/((1/C)+(1/C)..........)
1/2wavelength
(Di)/(Do) or (Hi)/(Ho)
rF

44. formula for the wavelength (debroglie wavelength) of a moving particle
((Th) -(Tl))/(Th)
constant pressure
constant volume
h/mv

45. velocity of a molecule of gas
F/A
sqrt(3KT/m)
1/4wavelength
GM*M/(r^2)

46. formula for centripetal acceleration
pL/A
1/4wavelength
(No)(wavelength)=(Nn)(new wavelength)
(V^2)/r

47. formula for finding the work function of a metal if the cutoff frequency is known
pL/A
h(Fo)
BLv
deltaU = deltaQ + deltaW

48. velocity of an electrion as it exitws from the hole
deltaU -deltaW
inelastic collision
2Pi * sqrt(l/g)
qrB/m

49. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
.5KA^2
(EMF)Rt/10
(Di)/(Do) or (Hi)/(Ho)
AV=(A2)(V2)

50. formula for torque
2nt=mwavelength
qrB/m
rF
KI/r