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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. hooke's law force of a spring
-KA
k|Q|/r^2
F/A
(V^2)/r

2. formula for charge stored in a capciator
E/B
e=mc^2
Q=CV
no force (right hand rule)

3. heat required to change temperature of a substance
elastic collision
G M/((d/2)^2)
h(Fo)
MC(deltaT)

4. formula for Carnot efficiency
M(Lf)
((Th) -(Tl))/(Th)
GM*M/(r^2)
qVB

5. voltage induced in a rod moving through a uniform magnetic field
BLv
(V^2)/R
joules/second
mgCostheta(mu)d

6. isometric
E/B
(3/2)nRdeltaT
1/2wavelength
constant volume

7. heat required to melt a substance
-KA
M(Lf)
deltaU -deltaW
delta x = (Vo)t + .5at^2

8. velocity of a molecule of gas
sqrt(3KT/m)
deltaU -deltaW
(Fn)(mu)
deltaU = deltaQ + deltaW

9. pressure
F/A
BA
2nt=mwavelength
no heat flow

10. units for voltage other than volts
(V^2)/R
net work = delta K
((Qin) -(Qout))/(Qin)
Joules/Columb

11. formula equating energy and mass
nSintheta=nsintheta
e=mc^2
V+IR
(No)(wavelength)=(Nn)(new wavelength)

12. formula for energy of a spring mass when spring is at maximum displacement
perfectly inelastic collision
.5KA^2
G M/((d/2)^2)
(No)(wavelength)=(Nn)(new wavelength)

13. magnification equation
(Di)/(Do) or (Hi)/(Ho)
2Pi * sqrt(l/g)
(Wnet)/(Qin)
(I^2)RT

14. force a charge in a Bfield
constant volume
qVB
J= Ft
delta x = (Vo)t + .5at^2

15. formula to find the gauge pressure at the bottom of a pool
((Th) -(Tl))/(Th)
delta x = (Vo)t + .5at^2
nSintheta=nsintheta
roegh

16. velocity of an electrion as it exitws from the hole
sqrt(3KT/m)
qVB
K |q||Q|/r^2
qrB/m

17. type of collision where K is not conserved
inelastic collision
(3/2)nRdeltaT
KI/r
Ed=V

18. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
net work = delta K
(No)(wavelength)=(Nn)(new wavelength)
.5mV^2 + .5KA^2
dSintheta=mwavelength

19. total capacitance of capacitors in series
.5mV^2 + .5KA^2
1/((1/C)+(1/C)..........)
(V^2)/r
elastic collision

20. heat during an isometric process
(I^2)R
n(Cv)(deltaT)
FV
deltaU -deltaW

21. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
BA
hc/wavelength

22. focal length of a mirror with radius d
d/2
qVB
opposite motion
(V^2)/R

23. new wavelength of light as it enters a new substance
((Qin) -(Qout))/(Qin)
qE
(No)(wavelength)=(Nn)(new wavelength)
2Pi * sqrt(l/g)

24. EMF of a battery having internal resistance R
k|Q|/r^2
Ed=V
V+IR
1/((1/C)+(1/C)..........)

25. the force on a charge moving parallel to a magnetic field
h/mv
no force (right hand rule)
2Pi * sqrt(l/g)
V^2=(Vo)^2 +2a*change in x

26. second kinematic
elastic collision
Ed=V
delta x = (Vo)t + .5at^2
h(Fo)

27. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
1/2wavelength
(No)(wavelength)=(Nn)(new wavelength)
h/wavelength

28. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
((Th) -(Tl))/(Th)
delta x = (Vo)t + .5at^2
opposite motion

29. formula for the wavelength (debroglie wavelength) of a moving particle
V+IR
roegh
(I^2)R
h/mv

30. new frequency of light as it enters a new substance
frequency never changes for light problems
G M/((d/2)^2)
(1/Do) + (1/Di) = (1/f)
FV

31. the units of current other than amps
constant pressure
1/4wavelength
Columbs/second
.5KA^2

32. formula for power with current and voltage
KQ/r
no temp change
sqrt(3KT/m)
VI

33. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
V^2=(Vo)^2 +2a*change in x
delta x = (Vo)t + .5at^2
no temp change

34. formula for change in internal energy in a cosnstat volume PV process
FV
(3/2)nRdeltaT
d/2
constant volume

35. the force on a charge in an electric field
qE
n(Cv)(deltaT)
(I^2)RT
deltaU -deltaW

36. energy stored in a capacitor
nSintheta=nsintheta
.5CV^2 or .5 Q^2/C or .5QV
-KA
(I^2)R

37. formula for torque
constant pressure
joules/second
rF
h/mv

38. formula for impulse involving momentum
mV -m(Vo)
(Di)/(Do) or (Hi)/(Ho)
V^2=(Vo)^2 +2a*change in x
k|Q|/r^2

39. formula for finding the magnetic field a distance r from a current carrying wire
mgCostheta(mu)d
KI/r
qV
Joules/Columb

40. what direction is friction?
d/2
(I^2)RT
opposite motion
h(Fo)

41. formula for period of a pendulum
2Pi * sqrt(l/g)
(hc/wavelength)=h(Fo) +(Vs)
(V^2)/R
.5mV^2 + .5KA^2

42. equation of continuity
-KA
AV=(A2)(V2)
roegh
2nt=mwavelength

43. formula for constructive interference in a thin membrane with two phase changes
((Qin) -(Qout))/(Qin)
.5KA^2
roeVg
2nt=mwavelength

44. electric potential a distance r from a charge
V+IR
1/((1/C)+(1/C)..........)
V = (Vo) + at
KQ/r

45. formula for centripetal acceleration
h/mv
2nt=mwavelength
joules/second
(V^2)/r

46. formula for impluse involving time
J= Ft
pL/A
(Patm) + (Pgauge)
h/mv

47. third kinematic
(Patm) + (Pgauge)
V^2=(Vo)^2 +2a*change in x
1/4wavelength
qVB

48. velocity of waves on a string if tension is known
no heat flow
V = (Vo) + at
sqrt(T/(m/))
roeVg

49. radius of curvature of a charged particle as it enters a uniform magnetic field
rF
M(Lf)
m(v^2)/qvB
h(Fo)

50. lens/mirror equation
sqrt(3KT/m)
(1/Do) + (1/Di) = (1/f)
deltaU = deltaQ + deltaW
KI/r