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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. type of collision where K is not conserved
inelastic collision
(Wnet)/(Qin)
deltaU = deltaQ + deltaW
BLv

2. total capacitance of capacitors in series
joules/second
1/((1/C)+(1/C)..........)
Ed=V
k|Q|/r^2

3. isobaric
constant pressure
qV
GM*M/(r^2)
(Fn)(mu)

4. electric potential a distance r from a charge
delta x = (Vo)t + .5at^2
V+IR
m(v^2)/qvB
KQ/r

5. formula for height of the block (at the start of a pendulum string) in terms of theta and L
GM*M/(r^2)
mV -m(Vo)
.5CV^2 or .5 Q^2/C or .5QV
L -LCostheta

6. formula equating energy and mass
e=mc^2
roegh
E/B
(Fn)(mu)

7. hooke's law force of a spring
(No)(wavelength)=(Nn)(new wavelength)
roeVg
-KA
V^2=(Vo)^2 +2a*change in x

8. formula for efficiency of a heat engine using work out
deltaU -deltaW
(Wnet)/(Qin)
V^2=(Vo)^2 +2a*change in x
((Th) -(Tl))/(Th)

9. formula for finding the magnetic field a distance r from a current carrying wire
L -LCostheta
KI/r
F/A
1/2wavelength

10. equation of continuity
1/((1/C)+(1/C)..........)
deltaU -deltaW
qrB/m
AV=(A2)(V2)

11. formula for change in internal energy in a cosnstat volume PV process
0
deltaU = deltaQ + deltaW
(3/2)nRdeltaT
(EMF)Rt/10

12. force a charge in a Bfield
F/A
deltaU = deltaQ + deltaW
qVB
BLv

13. formula for buoyant force
roeVg
.5mV^2 + .5KA^2
constant volume
0

14. isothermal
d/2
no temp change
M(Lf)
(1/Do) + (1/Di) = (1/f)

15. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
no force (right hand rule)
.5mV^2 + .5KA^2
mV -m(Vo)
roeVg

16. velocity of waves on a string if tension is known
deltaU = deltaQ + deltaW
K |q||Q|/r^2
mgCostheta(mu)d
sqrt(T/(m/))

17. formula for power with current and resistance
delta x = (Vo)t + .5at^2
Joules/Columb
(I^2)R
1/((1/C)+(1/C)..........)

18. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
d/2
1/2wavelength
roegh
(I^2)RT

19. second kinematic
KI/r
delta x = (Vo)t + .5at^2
constant pressure
nSintheta=nsintheta

20. heat during a cyclic process (net heat)
deltaU -deltaW
e=mc^2
h(Fo)
J= Ft

21. magnification equation
FV
(Di)/(Do) or (Hi)/(Ho)
(3/2)nRdeltaT
no heat flow

22. focal length of a mirror with radius d
d/2
M(Lf)
Joules/Columb
1/2wavelength

23. formula to find the gauge pressure at the bottom of a pool
1/2wavelength
roegh
(V^2)/r
qE

24. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
inelastic collision
dSintheta=mwavelength
mgCostheta(mu)d
G M/((d/2)^2)

25. velocity of a molecule of gas
sqrt(3KT/m)
G M/((d/2)^2)
qE
KQ/r

26. equation for the first law of thermodynamics
net work = delta K
deltaU = deltaQ + deltaW
mgCostheta(mu)d
rF

27. new frequency of light as it enters a new substance
1/4wavelength
V+IR
frequency never changes for light problems
L -LCostheta

28. natural frequency of an open tube of length L
(hc/wavelength)=h(Fo) +(Vs)
K |q||Q|/r^2
1/2wavelength
no temp change

29. electric field in a distance r from a charge
KQ/r
opposite motion
sqrt(3KT/m)
k|Q|/r^2

30. formula for finding the momentum of a photon
h/wavelength
hc/wavelength
nSintheta=nsintheta
e=mc^2

31. natural frequency of a closed tube of length L
(Wnet)/(Qin)
mV -m(Vo)
(No)(wavelength)=(Nn)(new wavelength)
1/4wavelength

32. heat required to melt a substance
K |q||Q|/r^2
BLv
M(Lf)
(EMF)Rt/10

33. formula for energy of a spring mass when spring is at maximum displacement
mgCostheta(mu)d
opposite motion
.5KA^2
(No)(wavelength)=(Nn)(new wavelength)

34. force of gravity between two objects of mass m
GM*M/(r^2)
(EMF)Rt/10
V^2=(Vo)^2 +2a*change in x
net work = delta K

35. formula for the wavelength (debroglie wavelength) of a moving particle
FV
hc/wavelength
((Th) -(Tl))/(Th)
h/mv

36. type of collision where objects stick togerther
hc/wavelength
perfectly inelastic collision
E/B
MC(deltaT)

37. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
V+IR
1/((1/C)+(1/C)..........)
E/B

38. new wavelength of light as it enters a new substance
FV
(No)(wavelength)=(Nn)(new wavelength)
M(Lf)
(Wnet)/(Qin)

39. formula for centripetal acceleration
M(Lf)
VI
(V^2)/r
V+IR

40. formula for power with Voltage and resistance
mgCostheta(mu)d
BLv
(V^2)/R
m(v^2)/qvB

41. formula for torque
frequency never changes for light problems
V = (Vo) + at
rF
.5KA^2

42. formula for critical angle
KQ/r
deltaU = deltaQ + deltaW
(N2)/(N1)
G M/((d/2)^2)

43. the force on a charge in an electric field
mV -m(Vo)
(V^2)/r
Columbs/second
qE

44. force of frction on an incline
constant volume
hc/wavelength
Ed=V
mgCostheta(mu)d

45. change in internal energy during a cyclic process
-KA
BLv
0
h/wavelength

46. formula for impulse involving momentum
h/mv
Columbs/second
2Pi * sqrt(l/g)
mV -m(Vo)

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
qV
sqrt(T/(m/))
MC(deltaT)
k|Q|/r^2

48. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
perfectly inelastic collision
h(Fo)
k|Q|/r^2

49. formula to find the absoluate pressure at the bottom of a pool
.5CV^2 or .5 Q^2/C or .5QV
(Patm) + (Pgauge)
roegh
joules/second

50. snells law
nSintheta=nsintheta
mV -m(Vo)
Q=CV
2Pi * sqrt(l/g)