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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. velocity of a molecule of gas
Ed=V
nSintheta=nsintheta
net work = delta K
sqrt(3KT/m)

2. forgotten power equation
roeVg
FV
1/((1/C)+(1/C)..........)
F/A

3. formula for Carnot efficiency
elastic collision
nSintheta=nsintheta
roeVg
((Th) -(Tl))/(Th)

4. formula for charge stored in a capciator
((Qin) -(Qout))/(Qin)
Q=CV
(1/Do) + (1/Di) = (1/f)
(V^2)/r

5. work energy theorum
BLv
net work = delta K
(Patm) + (Pgauge)
.5CV^2 or .5 Q^2/C or .5QV

6. resistance of a wire
0
pL/A
V+IR
sqrt(T/(m/))

7. units for voltage other than volts
2Pi * sqrt(l/g)
L -LCostheta
Joules/Columb
(Patm) + (Pgauge)

8. EMF of a battery having internal resistance R
opposite motion
V+IR
F/A
(EMF)Rt/10

9. formula to find the gauge pressure at the bottom of a pool
mV -m(Vo)
roegh
constant pressure
h(Fo)

10. force of gravity between two objects of mass m
2nt=mwavelength
(V^2)/r
mV -m(Vo)
GM*M/(r^2)

11. the units of power other than watts
.5CV^2 or .5 Q^2/C or .5QV
1/2wavelength
inelastic collision
joules/second

12. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
no temp change
dSintheta=mwavelength
perfectly inelastic collision
.5mV^2 + .5KA^2

13. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
qrB/m
(V^2)/r
(EMF)Rt/10
(Wnet)/(Qin)

14. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
opposite motion
G M/((d/2)^2)
hc/wavelength
-KA

15. new frequency of light as it enters a new substance
AV=(A2)(V2)
inelastic collision
frequency never changes for light problems
qV

16. snells law
.5KA^2
nSintheta=nsintheta
h(Fo)
mgCostheta(mu)d

17. formula for power with Voltage and resistance
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2
roeVg
(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
mV -m(Vo)
qV
BA
AV=(A2)(V2)

19. velocity of waves on a string if tension is known
frequency never changes for light problems
BA
sqrt(T/(m/))
(1/Do) + (1/Di) = (1/f)

20. isothermal
1/((1/C)+(1/C)..........)
1/2wavelength
no temp change
E/B

21. formula for buoyant force
VI
roeVg
joules/second
(V^2)/r

22. what direction is friction?
no force (right hand rule)
-KA
opposite motion
.5CV^2 or .5 Q^2/C or .5QV

23. formula for power with current and resistance
V^2=(Vo)^2 +2a*change in x
(I^2)R
(Fn)(mu)
1/4wavelength

24. force of friction
(Fn)(mu)
Columbs/second
qE
joules/second

25. magnification equation
Q=CV
J= Ft
(Di)/(Do) or (Hi)/(Ho)
G M/((d/2)^2)

26. formula for energy of a spring mass when spring is at maximum displacement
sqrt(3KT/m)
(EMF)Rt/10
(V^2)/r
.5KA^2

27. radius of curvature of a charged particle as it enters a uniform magnetic field
G M/((d/2)^2)
m(v^2)/qvB
qVB
MC(deltaT)

28. formula for efficiency of a heat engine using work out
no force (right hand rule)
1/((1/C)+(1/C)..........)
deltaU -deltaW
(Wnet)/(Qin)

29. velocity of an electrion as it exitws from the hole
GM*M/(r^2)
qrB/m
(V^2)/r
L -LCostheta

30. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
M(Lf)
(No)(wavelength)=(Nn)(new wavelength)
E/B
1/4wavelength

31. energy of a photon if wavelength is known
hc/wavelength
BA
KI/r
MC(deltaT)

32. formula for the wavelength (debroglie wavelength) of a moving particle
no heat flow
h/mv
h(Fo)
d/2

33. formula for change in internal energy in a cosnstat volume PV process
V+IR
(hc/wavelength)=h(Fo) +(Vs)
M(Lf)
(3/2)nRdeltaT

34. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
qE
((Th) -(Tl))/(Th)
J= Ft

35. isobaric
2Pi * sqrt(l/g)
L -LCostheta
constant pressure
E/B

36. formula for impluse involving time
J= Ft
elastic collision
(3/2)nRdeltaT
e=mc^2

37. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
V+IR
1/4wavelength
sqrt(3KT/m)

38. the electric force between two objects of charge Q
hc/wavelength
(1/Do) + (1/Di) = (1/f)
e=mc^2
K |q||Q|/r^2

39. equation for the first law of thermodynamics
1/((1/C)+(1/C)..........)
n(Cv)(deltaT)
deltaU = deltaQ + deltaW
joules/second

40. formula for centripetal acceleration
no temp change
qE
(V^2)/r
V+IR

41. formula relating voltage and electric field
Ed=V
.5KA^2
(I^2)R
e=mc^2

42. change in internal energy during a cyclic process
V = (Vo) + at
((Qin) -(Qout))/(Qin)
0
Ed=V

43. type of collision where K is conserved
net work = delta K
qVB
.5mV^2 + .5KA^2
elastic collision

44. formula for period of a pendulum
2Pi * sqrt(l/g)
((Qin) -(Qout))/(Qin)
no temp change
Columbs/second

45. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
qVB
d/2
nSintheta=nsintheta

46. heat required to melt a substance
n(Cv)(deltaT)
h(Fo)
(Di)/(Do) or (Hi)/(Ho)
M(Lf)

47. formula for finding magnetic flux
BA
joules/second
(Patm) + (Pgauge)
M(Lf)

48. lens/mirror equation
((Th) -(Tl))/(Th)
rF
(1/Do) + (1/Di) = (1/f)
BA

49. force of frction on an incline
mgCostheta(mu)d
K |q||Q|/r^2
(Wnet)/(Qin)
constant pressure

50. hooke's law force of a spring
Q=CV
qrB/m
F/A
-KA