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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 energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
Joules/Columb
(N2)/(N1)
pL/A

2. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
deltaU -deltaW
(I^2)RT
roegh
(3/2)nRdeltaT

3. heat during an isometric process
qV
M(Lf)
n(Cv)(deltaT)
K |q||Q|/r^2

4. work energy theorum
(I^2)R
(1/Do) + (1/Di) = (1/f)
Columbs/second
net work = delta K

5. magnification equation
((Th) -(Tl))/(Th)
(Di)/(Do) or (Hi)/(Ho)
rF
joules/second

6. heat during a cyclic process (net heat)
joules/second
(Di)/(Do) or (Hi)/(Ho)
deltaU -deltaW
MC(deltaT)

7. formula equating energy and mass
L -LCostheta
e=mc^2
sqrt(3KT/m)
J= Ft

8. focal length of a mirror with radius d
no heat flow
d/2
Columbs/second
VI

9. isobaric
qrB/m
constant pressure
VI
K |q||Q|/r^2

10. formula for finding the work function of a metal if the cutoff frequency is known
BA
e=mc^2
constant volume
h(Fo)

11. velocity of waves on a string if tension is known
(V^2)/R
V^2=(Vo)^2 +2a*change in x
h/wavelength
sqrt(T/(m/))

12. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
J= Ft
sqrt(3KT/m)
KI/r

13. formula for energy of a spring mass when spring is at maximum displacement
qVB
.5KA^2
VI
n(Cv)(deltaT)

14. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
E/B
opposite motion
nSintheta=nsintheta
G M/((d/2)^2)

15. electric field in a distance r from a charge
.5CV^2 or .5 Q^2/C or .5QV
M(Lf)
k|Q|/r^2
joules/second

16. new frequency of light as it enters a new substance
0
no temp change
roeVg
frequency never changes for light problems

17. total capacitance of capacitors in series
BLv
n(Cv)(deltaT)
1/((1/C)+(1/C)..........)
sqrt(T/(m/))

18. formula to find the absoluate pressure at the bottom of a pool
Q=CV
elastic collision
net work = delta K
(Patm) + (Pgauge)

19. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
k|Q|/r^2
opposite motion

20. formula for efficiency of a heat engine using work out
GM*M/(r^2)
V^2=(Vo)^2 +2a*change in x
K |q||Q|/r^2
(Wnet)/(Qin)

21. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
opposite motion
h/wavelength
.5mV^2 + .5KA^2
(Di)/(Do) or (Hi)/(Ho)

22. formula to find the gauge pressure at the bottom of a pool
(I^2)R
KQ/r
roegh
(Patm) + (Pgauge)

23. type of collision where K is not conserved
MC(deltaT)
J= Ft
inelastic collision
dSintheta=mwavelength

24. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
no force (right hand rule)
Columbs/second
E/B

25. lens/mirror equation
no heat flow
(1/Do) + (1/Di) = (1/f)
KQ/r
hc/wavelength

26. forgotten power equation
Q=CV
M(Lf)
FV
Columbs/second

27. the units of power other than watts
joules/second
rF
(V^2)/R
roeVg

28. equation of continuity
(hc/wavelength)=h(Fo) +(Vs)
V = (Vo) + at
AV=(A2)(V2)
(Fn)(mu)

29. formula relating voltage and electric field
(N2)/(N1)
V = (Vo) + at
J= Ft
Ed=V

30. formula for buoyant force
1/2wavelength
roeVg
opposite motion
V^2=(Vo)^2 +2a*change in x

31. velocity of an electrion as it exitws from the hole
VI
V^2=(Vo)^2 +2a*change in x
qrB/m
e=mc^2

32. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
(No)(wavelength)=(Nn)(new wavelength)
(EMF)Rt/10
.5KA^2

33. force of friction
(Fn)(mu)
k|Q|/r^2
BA
V = (Vo) + at

34. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
mgCostheta(mu)d
(N2)/(N1)
(Di)/(Do) or (Hi)/(Ho)

35. third kinematic
Joules/Columb
G M/((d/2)^2)
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV

36. what direction is friction?
(I^2)R
opposite motion
VI
qVB

37. formula for power with current and voltage
V = (Vo) + at
-KA
VI
mgCostheta(mu)d

38. heat required to change temperature of a substance
MC(deltaT)
h/mv
no heat flow
frequency never changes for light problems

39. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
perfectly inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
(Wnet)/(Qin)
(N2)/(N1)

40. natural frequency of an open tube of length L
1/2wavelength
0
(No)(wavelength)=(Nn)(new wavelength)
h/wavelength

41. radius of curvature of a charged particle as it enters a uniform magnetic field
(Wnet)/(Qin)
deltaU -deltaW
m(v^2)/qvB
joules/second

42. formula for height of the block (at the start of a pendulum string) in terms of theta and L
h(Fo)
sqrt(T/(m/))
L -LCostheta
2Pi * sqrt(l/g)

43. adibatic
no heat flow
M(Lf)
frequency never changes for light problems
1/2wavelength

44. force of frction on an incline
mgCostheta(mu)d
(V^2)/R
(V^2)/r
(Fn)(mu)

45. the force on a charge in an electric field
qE
net work = delta K
no force (right hand rule)
2nt=mwavelength

46. EMF of a battery having internal resistance R
h/wavelength
V^2=(Vo)^2 +2a*change in x
V+IR
1/4wavelength

47. the units of current other than amps
(N2)/(N1)
(I^2)RT
KI/r
Columbs/second

48. isometric
(hc/wavelength)=h(Fo) +(Vs)
constant volume
k|Q|/r^2
e=mc^2

49. formula for charge stored in a capciator
(I^2)RT
Q=CV
sqrt(T/(m/))
2Pi * sqrt(l/g)

50. voltage induced in a rod moving through a uniform magnetic field
(V^2)/R
n(Cv)(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
BLv