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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. force of gravity between two objects of mass m
F/A
0
GM*M/(r^2)
(V^2)/r

2. energy of a photon if wavelength is known
hc/wavelength
Columbs/second
Q=CV
roeVg

3. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
(I^2)RT
(Di)/(Do) or (Hi)/(Ho)
no temp change

4. formula for centripetal acceleration
h/mv
(V^2)/r
G M/((d/2)^2)
1/2wavelength

5. equation for the first law of thermodynamics
(1/Do) + (1/Di) = (1/f)
.5mV^2 + .5KA^2
deltaU = deltaQ + deltaW
(N2)/(N1)

6. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
GM*M/(r^2)
deltaU -deltaW
(EMF)Rt/10
F/A

7. formula for constructive interference in a thin membrane with two phase changes
KQ/r
2nt=mwavelength
k|Q|/r^2
h(Fo)

8. forgotten power equation
(V^2)/R
net work = delta K
qE
FV

9. lens/mirror equation
(3/2)nRdeltaT
(1/Do) + (1/Di) = (1/f)
((Th) -(Tl))/(Th)
constant pressure

10. resistance of a wire
d/2
V+IR
pL/A
h/mv

11. isothermal
no temp change
elastic collision
(Wnet)/(Qin)
G M/((d/2)^2)

12. formula to find the gauge pressure at the bottom of a pool
rF
roegh
sqrt(T/(m/))
nSintheta=nsintheta

13. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
1/2wavelength
opposite motion
(EMF)Rt/10

14. new frequency of light as it enters a new substance
1/4wavelength
frequency never changes for light problems
((Th) -(Tl))/(Th)
(N2)/(N1)

15. isometric
constant volume
GM*M/(r^2)
(N2)/(N1)
qVB

16. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
K |q||Q|/r^2
(No)(wavelength)=(Nn)(new wavelength)
(I^2)RT

17. formula for power with Voltage and resistance
1/((1/C)+(1/C)..........)
(V^2)/R
h/mv
F/A

18. formula for charge stored in a capciator
(Wnet)/(Qin)
Q=CV
hc/wavelength
delta x = (Vo)t + .5at^2

19. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
G M/((d/2)^2)
elastic collision
(hc/wavelength)=h(Fo) +(Vs)
frequency never changes for light problems

20. force of frction on an incline
deltaU -deltaW
qV
mgCostheta(mu)d
sqrt(T/(m/))

21. velocity of a molecule of gas
sqrt(3KT/m)
FV
KQ/r
d/2

22. energy stored in a capacitor
VI
.5CV^2 or .5 Q^2/C or .5QV
joules/second
2nt=mwavelength

23. type of collision where objects stick togerther
perfectly inelastic collision
BA
.5mV^2 + .5KA^2
pL/A

24. formula for impluse involving time
1/((1/C)+(1/C)..........)
J= Ft
joules/second
G M/((d/2)^2)

25. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
no force (right hand rule)
(EMF)Rt/10
BA

26. equation of continuity
AV=(A2)(V2)
perfectly inelastic collision
(Patm) + (Pgauge)
(hc/wavelength)=h(Fo) +(Vs)

27. heat required to melt a substance
(1/Do) + (1/Di) = (1/f)
M(Lf)
KI/r
frequency never changes for light problems

28. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
qE
h/mv
VI

29. formula for buoyant force
no temp change
roeVg
(EMF)Rt/10
(Di)/(Do) or (Hi)/(Ho)

30. formula for finding the magnetic field a distance r from a current carrying wire
AV=(A2)(V2)
BLv
deltaU -deltaW
KI/r

31. natural frequency of an open tube of length L
L -LCostheta
1/2wavelength
V+IR
0

32. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
.5mV^2 + .5KA^2
inelastic collision
qV
2nt=mwavelength

33. force of friction
(Fn)(mu)
no heat flow
0
(EMF)Rt/10

34. radius of curvature of a charged particle as it enters a uniform magnetic field
no temp change
.5mV^2 + .5KA^2
no force (right hand rule)
m(v^2)/qvB

35. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
(I^2)RT
no temp change
(V^2)/r

36. formula for height of the block (at the start of a pendulum string) in terms of theta and L
Ed=V
L -LCostheta
frequency never changes for light problems
constant volume

37. formula for efficiency of a heat engine using work out
Columbs/second
(Wnet)/(Qin)
qV
V+IR

38. change in internal energy during a cyclic process
roeVg
0
opposite motion
(N2)/(N1)

39. formula for the wavelength (debroglie wavelength) of a moving particle
V+IR
constant pressure
frequency never changes for light problems
h/mv

40. units for voltage other than volts
F/A
-KA
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb

41. snells law
qVB
(V^2)/r
nSintheta=nsintheta
e=mc^2

42. formula for torque
-KA
1/((1/C)+(1/C)..........)
rF
inelastic collision

43. formula for finding the momentum of a photon
k|Q|/r^2
deltaU = deltaQ + deltaW
h/wavelength
VI

44. the units of power other than watts
joules/second
1/((1/C)+(1/C)..........)
.5KA^2
V+IR

45. work energy theorum
V^2=(Vo)^2 +2a*change in x
AV=(A2)(V2)
net work = delta K
(V^2)/r

46. formula to find the absoluate pressure at the bottom of a pool
h/mv
e=mc^2
(Patm) + (Pgauge)
qE

47. heat required to change temperature of a substance
MC(deltaT)
.5CV^2 or .5 Q^2/C or .5QV
no temp change
(Fn)(mu)

48. total capacitance of capacitors in series
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
1/((1/C)+(1/C)..........)
mgCostheta(mu)d

49. force a charge in a Bfield
qVB
no force (right hand rule)
(V^2)/r
delta x = (Vo)t + .5at^2

50. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
V^2=(Vo)^2 +2a*change in x
n(Cv)(deltaT)
(No)(wavelength)=(Nn)(new wavelength)