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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. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
inelastic collision
KQ/r
opposite motion

2. formula to find the absoluate pressure at the bottom of a pool
roeVg
(Patm) + (Pgauge)
hc/wavelength
F/A

3. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
K |q||Q|/r^2
V+IR
no heat flow
G M/((d/2)^2)

4. natural frequency of an open tube of length L
AV=(A2)(V2)
BA
1/2wavelength
k|Q|/r^2

5. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
constant volume
pL/A
((Qin) -(Qout))/(Qin)

6. formula relating voltage and electric field
sqrt(T/(m/))
(No)(wavelength)=(Nn)(new wavelength)
Ed=V
0

7. formula for constructive interference in a diffraction grating
deltaU = deltaQ + deltaW
dSintheta=mwavelength
hc/wavelength
-KA

8. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
n(Cv)(deltaT)
.5mV^2 + .5KA^2
qrB/m
elastic collision

9. new wavelength of light as it enters a new substance
dSintheta=mwavelength
(Wnet)/(Qin)
(No)(wavelength)=(Nn)(new wavelength)
sqrt(T/(m/))

10. new frequency of light as it enters a new substance
frequency never changes for light problems
VI
(3/2)nRdeltaT
(V^2)/r

11. formula for the wavelength (debroglie wavelength) of a moving particle
F/A
.5mV^2 + .5KA^2
roeVg
h/mv

12. radius of curvature of a charged particle as it enters a uniform magnetic field
mV -m(Vo)
(I^2)RT
m(v^2)/qvB
deltaU = deltaQ + deltaW

13. formula for charge stored in a capciator
mgCostheta(mu)d
(EMF)Rt/10
Q=CV
pL/A

14. 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
opposite motion
.5KA^2
GM*M/(r^2)

15. EMF of a battery having internal resistance R
qE
V+IR
n(Cv)(deltaT)
frequency never changes for light problems

16. snells law
(EMF)Rt/10
opposite motion
nSintheta=nsintheta
1/2wavelength

17. natural frequency of a closed tube of length L
1/4wavelength
(Patm) + (Pgauge)
2nt=mwavelength
Joules/Columb

18. pressure
(EMF)Rt/10
h/wavelength
Columbs/second
F/A

19. heat during a cyclic process (net heat)
deltaU -deltaW
(N2)/(N1)
mgCostheta(mu)d
.5mV^2 + .5KA^2

20. formula for efficiency not using work out
M(Lf)
((Th) -(Tl))/(Th)
(I^2)RT
((Qin) -(Qout))/(Qin)

21. velocity of a molecule of gas
elastic collision
sqrt(3KT/m)
sqrt(T/(m/))
dSintheta=mwavelength

22. formula for finding the work function of a metal if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
M(Lf)
(Patm) + (Pgauge)
h(Fo)

23. electric potential a distance r from a charge
KQ/r
joules/second
no heat flow
1/4wavelength

24. type of collision where objects stick togerther
(N2)/(N1)
qE
perfectly inelastic collision
n(Cv)(deltaT)

25. formula equating energy and mass
constant volume
e=mc^2
AV=(A2)(V2)
roegh

26. lens/mirror equation
k|Q|/r^2
MC(deltaT)
(1/Do) + (1/Di) = (1/f)
G M/((d/2)^2)

27. force a charge in a Bfield
qVB
hc/wavelength
Q=CV
delta x = (Vo)t + .5at^2

28. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
F/A
sqrt(3KT/m)
K |q||Q|/r^2

29. formula for power with current and voltage
M(Lf)
VI
FV
d/2

30. formula for period of a pendulum
2Pi * sqrt(l/g)
((Qin) -(Qout))/(Qin)
m(v^2)/qvB
E/B

31. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
h/mv
k|Q|/r^2
E/B
F/A

32. total capacitance of capacitors in series
(I^2)R
(Patm) + (Pgauge)
1/((1/C)+(1/C)..........)
GM*M/(r^2)

33. heat required to melt a substance
k|Q|/r^2
M(Lf)
FV
Joules/Columb

34. formula for buoyant force
roeVg
Q=CV
n(Cv)(deltaT)
constant volume

35. formula for impulse involving momentum
(Di)/(Do) or (Hi)/(Ho)
mV -m(Vo)
(EMF)Rt/10
delta x = (Vo)t + .5at^2

36. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
(Wnet)/(Qin)
2Pi * sqrt(l/g)
elastic collision

37. velocity of waves on a string if tension is known
(I^2)R
sqrt(T/(m/))
(N2)/(N1)
KI/r

38. adibatic
(Patm) + (Pgauge)
no heat flow
MC(deltaT)
V^2=(Vo)^2 +2a*change in x

39. forgotten power equation
M(Lf)
FV
J= Ft
AV=(A2)(V2)

40. velocity of an electrion as it exitws from the hole
Q=CV
mgCostheta(mu)d
(I^2)R
qrB/m

41. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
no heat flow
1/((1/C)+(1/C)..........)
(I^2)RT

42. third kinematic
qVB
roeVg
V^2=(Vo)^2 +2a*change in x
(Fn)(mu)

43. equation of continuity
m(v^2)/qvB
joules/second
AV=(A2)(V2)
deltaU = deltaQ + deltaW

44. the units of current other than amps
(N2)/(N1)
Columbs/second
V+IR
-KA

45. heat during an isometric process
BLv
n(Cv)(deltaT)
constant volume
(Fn)(mu)

46. formula for finding magnetic flux
deltaU = deltaQ + deltaW
BA
Q=CV
(V^2)/R

47. second kinematic
qVB
.5CV^2 or .5 Q^2/C or .5QV
delta x = (Vo)t + .5at^2
nSintheta=nsintheta

48. formula for impluse involving time
J= Ft
elastic collision
deltaU = deltaQ + deltaW
0

49. isothermal
no temp change
mgCostheta(mu)d
qV
joules/second

50. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
qrB/m
d/2
G M/((d/2)^2)