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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 a molecule of gas
FV
E/B
V^2=(Vo)^2 +2a*change in x
sqrt(3KT/m)

2. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
M(Lf)
elastic collision
h/wavelength

3. formula for finding the momentum of a photon
(Patm) + (Pgauge)
h/wavelength
deltaU = deltaQ + deltaW
deltaU -deltaW

4. formula to find the gauge pressure at the bottom of a pool
.5CV^2 or .5 Q^2/C or .5QV
joules/second
roegh
((Th) -(Tl))/(Th)

5. EMF of a battery having internal resistance R
V+IR
2Pi * sqrt(l/g)
roegh
joules/second

6. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
deltaU -deltaW
h/mv
((Qin) -(Qout))/(Qin)

7. energy of a photon if wavelength is known
deltaU -deltaW
Joules/Columb
hc/wavelength
AV=(A2)(V2)

8. formula for constructive interference in a diffraction grating
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
inelastic collision
roegh

9. natural frequency of a closed tube of length L
constant pressure
((Th) -(Tl))/(Th)
1/4wavelength
no force (right hand rule)

10. force a charge in a Bfield
J= Ft
.5CV^2 or .5 Q^2/C or .5QV
qVB
Q=CV

11. formula for period of a pendulum
2Pi * sqrt(l/g)
0
inelastic collision
deltaU -deltaW

12. forgotten power equation
KI/r
FV
BA
(I^2)R

13. electric field in a distance r from a charge
inelastic collision
k|Q|/r^2
BA
qV

14. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
elastic collision
((Th) -(Tl))/(Th)
h/wavelength

15. units for voltage other than volts
Joules/Columb
sqrt(3KT/m)
sqrt(T/(m/))
roegh

16. formula for Carnot efficiency
((Th) -(Tl))/(Th)
net work = delta K
dSintheta=mwavelength
V^2=(Vo)^2 +2a*change in x

17. electric potential a distance r from a charge
delta x = (Vo)t + .5at^2
k|Q|/r^2
KQ/r
M(Lf)

18. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
Q=CV
(EMF)Rt/10
1/((1/C)+(1/C)..........)
0

19. formula relating voltage and electric field
(Di)/(Do) or (Hi)/(Ho)
Ed=V
constant volume
KI/r

20. formula for charge stored in a capciator
Q=CV
h/mv
1/2wavelength
roeVg

21. force of gravity between two objects of mass m
BLv
net work = delta K
L -LCostheta
GM*M/(r^2)

22. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
dSintheta=mwavelength
-KA
h/wavelength

23. type of collision where K is not conserved
pL/A
inelastic collision
perfectly inelastic collision
G M/((d/2)^2)

24. the units of power other than watts
Q=CV
joules/second
mgCostheta(mu)d
constant volume

25. what direction is friction?
(hc/wavelength)=h(Fo) +(Vs)
roegh
F/A
opposite motion

26. voltage induced in a rod moving through a uniform magnetic field
BLv
V+IR
MC(deltaT)
Ed=V

27. formula equating energy and mass
qV
V = (Vo) + at
e=mc^2
net work = delta K

28. natural frequency of an open tube of length L
(Wnet)/(Qin)
1/4wavelength
1/2wavelength
delta x = (Vo)t + .5at^2

29. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
roeVg
(Di)/(Do) or (Hi)/(Ho)
(V^2)/r
G M/((d/2)^2)

30. third kinematic
no temp change
MC(deltaT)
qV
V^2=(Vo)^2 +2a*change in x

31. the units of current other than amps
Columbs/second
BA
no force (right hand rule)
V^2=(Vo)^2 +2a*change in x

32. type of collision where objects stick togerther
perfectly inelastic collision
L -LCostheta
GM*M/(r^2)
.5CV^2 or .5 Q^2/C or .5QV

33. isometric
G M/((d/2)^2)
1/2wavelength
constant volume
inelastic collision

34. formula for buoyant force
roeVg
Joules/Columb
.5CV^2 or .5 Q^2/C or .5QV
J= Ft

35. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
(Patm) + (Pgauge)
qrB/m
(N2)/(N1)

36. change in internal energy during a cyclic process
1/2wavelength
0
Ed=V
sqrt(3KT/m)

37. formula for power with current and voltage
GM*M/(r^2)
VI
G M/((d/2)^2)
perfectly inelastic collision

38. formula for energy of a spring mass when spring is at maximum displacement
-KA
deltaU -deltaW
qrB/m
.5KA^2

39. formula for efficiency of a heat engine using work out
Ed=V
(I^2)RT
(Wnet)/(Qin)
(No)(wavelength)=(Nn)(new wavelength)

40. heat required to melt a substance
1/4wavelength
nSintheta=nsintheta
n(Cv)(deltaT)
M(Lf)

41. heat during an isometric process
E/B
n(Cv)(deltaT)
G M/((d/2)^2)
constant volume

42. the electric force between two objects of charge Q
K |q||Q|/r^2
2nt=mwavelength
rF
KI/r

43. new frequency of light as it enters a new substance
2nt=mwavelength
((Qin) -(Qout))/(Qin)
deltaU = deltaQ + deltaW
frequency never changes for light problems

44. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
k|Q|/r^2
qV
(V^2)/R
Ed=V

45. formula for power with Voltage and resistance
-KA
sqrt(T/(m/))
(V^2)/R
nSintheta=nsintheta

46. formula for centripetal acceleration
K |q||Q|/r^2
m(v^2)/qvB
KQ/r
(V^2)/r

47. lens/mirror equation
FV
(1/Do) + (1/Di) = (1/f)
qrB/m
(Patm) + (Pgauge)

48. the force on a charge in an electric field
(V^2)/r
qE
dSintheta=mwavelength
MC(deltaT)

49. force of frction on an incline
opposite motion
mgCostheta(mu)d
V^2=(Vo)^2 +2a*change in x
((Qin) -(Qout))/(Qin)

50. equation for the first law of thermodynamics
1/((1/C)+(1/C)..........)
deltaU = deltaQ + deltaW
2Pi * sqrt(l/g)
constant volume