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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. formula for impulse involving momentum
mV -m(Vo)
VI
k|Q|/r^2
E/B

2. energy stored in a capacitor
AV=(A2)(V2)
.5CV^2 or .5 Q^2/C or .5QV
roegh
1/((1/C)+(1/C)..........)

3. pressure
1/2wavelength
qE
F/A
.5KA^2

4. heat required to change temperature of a substance
MC(deltaT)
F/A
sqrt(3KT/m)
m(v^2)/qvB

5. energy of a photon if wavelength is known
e=mc^2
net work = delta K
hc/wavelength
rF

6. formula for efficiency not using work out
2Pi * sqrt(l/g)
net work = delta K
((Qin) -(Qout))/(Qin)
-KA

7. force a charge in a Bfield
qVB
Columbs/second
e=mc^2
(V^2)/R

8. the electric force between two objects of charge Q
constant pressure
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
GM*M/(r^2)

9. units for voltage other than volts
(V^2)/r
.5KA^2
pL/A
Joules/Columb

10. formula for finding the magnetic field a distance r from a current carrying wire
nSintheta=nsintheta
KI/r
(N2)/(N1)
sqrt(3KT/m)

11. formula equating energy and mass
no heat flow
e=mc^2
VI
(I^2)RT

12. equation of continuity
AV=(A2)(V2)
1/2wavelength
pL/A
elastic collision

13. isometric
e=mc^2
(Fn)(mu)
GM*M/(r^2)
constant volume

14. new wavelength of light as it enters a new substance
(I^2)R
(No)(wavelength)=(Nn)(new wavelength)
constant pressure
BLv

15. magnification equation
J= Ft
(Di)/(Do) or (Hi)/(Ho)
sqrt(3KT/m)
no temp change

16. formula for constructive interference in a thin membrane with two phase changes
h/mv
J= Ft
frequency never changes for light problems
2nt=mwavelength

17. the force on a charge moving parallel to a magnetic field
(I^2)R
FV
no force (right hand rule)
opposite motion

18. formula for centripetal acceleration
no temp change
e=mc^2
(V^2)/r
deltaU -deltaW

19. snells law
Ed=V
nSintheta=nsintheta
delta x = (Vo)t + .5at^2
MC(deltaT)

20. focal length of a mirror with radius d
Ed=V
M(Lf)
d/2
qVB

21. formula relating voltage and electric field
Ed=V
(hc/wavelength)=h(Fo) +(Vs)
VI
(Patm) + (Pgauge)

22. formula to find the gauge pressure at the bottom of a pool
1/4wavelength
roegh
(I^2)RT
m(v^2)/qvB

23. type of collision where K is conserved
.5CV^2 or .5 Q^2/C or .5QV
elastic collision
rF
GM*M/(r^2)

24. natural frequency of an open tube of length L
1/2wavelength
(Fn)(mu)
((Qin) -(Qout))/(Qin)
(Wnet)/(Qin)

25. formula for height of the block (at the start of a pendulum string) in terms of theta and L
Columbs/second
elastic collision
1/2wavelength
L -LCostheta

26. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
k|Q|/r^2
(I^2)RT
no temp change
n(Cv)(deltaT)

27. what direction is friction?
opposite motion
Columbs/second
Q=CV
nSintheta=nsintheta

28. velocity of a molecule of gas
1/((1/C)+(1/C)..........)
sqrt(3KT/m)
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))

29. electric field in a distance r from a charge
1/2wavelength
k|Q|/r^2
VI
FV

30. adibatic
BA
qrB/m
no heat flow
(N2)/(N1)

31. force of friction
FV
(Fn)(mu)
BLv
.5CV^2 or .5 Q^2/C or .5QV

32. formula for period of a pendulum
M(Lf)
deltaU -deltaW
pL/A
2Pi * sqrt(l/g)

33. forgotten power equation
Q=CV
FV
.5mV^2 + .5KA^2
n(Cv)(deltaT)

34. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
mV -m(Vo)
pL/A
deltaU = deltaQ + deltaW
G M/((d/2)^2)

35. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
Columbs/second
.5mV^2 + .5KA^2
nSintheta=nsintheta
sqrt(T/(m/))

36. force of gravity between two objects of mass m
BA
1/2wavelength
MC(deltaT)
GM*M/(r^2)

37. resistance of a wire
(hc/wavelength)=h(Fo) +(Vs)
pL/A
h(Fo)
AV=(A2)(V2)

38. second kinematic
sqrt(3KT/m)
delta x = (Vo)t + .5at^2
-KA
(Patm) + (Pgauge)

39. total capacitance of capacitors in series
G M/((d/2)^2)
1/((1/C)+(1/C)..........)
Ed=V
frequency never changes for light problems

40. formula for finding the momentum of a photon
h/wavelength
qE
1/((1/C)+(1/C)..........)
mgCostheta(mu)d

41. velocity of waves on a string if tension is known
V+IR
M(Lf)
Ed=V
sqrt(T/(m/))

42. formula for energy of a spring mass when spring is at maximum displacement
V = (Vo) + at
V+IR
.5KA^2
VI

43. electric potential a distance r from a charge
KQ/r
joules/second
(Patm) + (Pgauge)
mgCostheta(mu)d

44. formula for buoyant force
1/((1/C)+(1/C)..........)
roeVg
d/2
(Di)/(Do) or (Hi)/(Ho)

45. formula for efficiency of a heat engine using work out
Q=CV
(Wnet)/(Qin)
(V^2)/R
Joules/Columb

46. formula to find the absoluate pressure at the bottom of a pool
delta x = (Vo)t + .5at^2
VI
hc/wavelength
(Patm) + (Pgauge)

47. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
no heat flow
MC(deltaT)
qV
.5mV^2 + .5KA^2

48. formula for constructive interference in a diffraction grating
(Patm) + (Pgauge)
dSintheta=mwavelength
E/B
MC(deltaT)

49. work energy theorum
(I^2)RT
elastic collision
net work = delta K
L -LCostheta

50. formula for impluse involving time
.5mV^2 + .5KA^2
net work = delta K
J= Ft
BLv