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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. velocity of an electrion as it exitws from the hole
FV
GM*M/(r^2)
qrB/m
F/A

2. type of collision where objects stick togerther
L -LCostheta
deltaU = deltaQ + deltaW
perfectly inelastic collision
opposite motion

3. formula for impluse involving time
J= Ft
.5CV^2 or .5 Q^2/C or .5QV
K |q||Q|/r^2
qE

4. equation of continuity
(3/2)nRdeltaT
frequency never changes for light problems
AV=(A2)(V2)
qrB/m

5. what direction is friction?
1/4wavelength
opposite motion
perfectly inelastic collision
dSintheta=mwavelength

6. formula for impulse involving momentum
dSintheta=mwavelength
no temp change
mV -m(Vo)
J= Ft

7. isothermal
Q=CV
hc/wavelength
(I^2)RT
no temp change

8. new frequency of light as it enters a new substance
mgCostheta(mu)d
frequency never changes for light problems
h/wavelength
((Qin) -(Qout))/(Qin)

9. the electric force between two objects of charge Q
K |q||Q|/r^2
(1/Do) + (1/Di) = (1/f)
2nt=mwavelength
1/2wavelength

10. force of gravity between two objects of mass m
GM*M/(r^2)
sqrt(3KT/m)
no temp change
qrB/m

11. heat required to change temperature of a substance
L -LCostheta
V^2=(Vo)^2 +2a*change in x
E/B
MC(deltaT)

12. focal length of a mirror with radius d
V = (Vo) + at
qVB
d/2
(V^2)/R

13. formula for the wavelength (debroglie wavelength) of a moving particle
V = (Vo) + at
h/mv
F/A
1/4wavelength

14. third kinematic
mgCostheta(mu)d
qVB
V^2=(Vo)^2 +2a*change in x
GM*M/(r^2)

15. formula for height of the block (at the start of a pendulum string) in terms of theta and L
deltaU = deltaQ + deltaW
V+IR
roegh
L -LCostheta

16. formula for finding the momentum of a photon
e=mc^2
(N2)/(N1)
h/wavelength
perfectly inelastic collision

17. resistance of a wire
pL/A
VI
opposite motion
1/((1/C)+(1/C)..........)

18. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(N2)/(N1)
G M/((d/2)^2)
pL/A
no temp change

19. second kinematic
(Wnet)/(Qin)
delta x = (Vo)t + .5at^2
hc/wavelength
.5CV^2 or .5 Q^2/C or .5QV

20. force a charge in a Bfield
deltaU -deltaW
KI/r
(3/2)nRdeltaT
qVB

21. total capacitance of capacitors in series
h/mv
1/((1/C)+(1/C)..........)
J= Ft
m(v^2)/qvB

22. equation for the first law of thermodynamics
d/2
qV
1/2wavelength
deltaU = deltaQ + deltaW

23. heat during an isometric process
pL/A
mV -m(Vo)
V^2=(Vo)^2 +2a*change in x
n(Cv)(deltaT)

24. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
n(Cv)(deltaT)
sqrt(T/(m/))
deltaU = deltaQ + deltaW

25. velocity of a molecule of gas
sqrt(3KT/m)
V = (Vo) + at
Joules/Columb
G M/((d/2)^2)

26. type of collision where K is not conserved
mgCostheta(mu)d
qE
1/((1/C)+(1/C)..........)
inelastic collision

27. formula relating voltage and electric field
no heat flow
Ed=V
AV=(A2)(V2)
n(Cv)(deltaT)

28. formula equating energy and mass
e=mc^2
mV -m(Vo)
(Patm) + (Pgauge)
net work = delta K

29. voltage induced in a rod moving through a uniform magnetic field
delta x = (Vo)t + .5at^2
.5mV^2 + .5KA^2
(I^2)RT
BLv

30. pressure
(I^2)R
(EMF)Rt/10
F/A
roeVg

31. units for voltage other than volts
joules/second
Joules/Columb
1/4wavelength
BA

32. force of frction on an incline
(Di)/(Do) or (Hi)/(Ho)
mgCostheta(mu)d
KI/r
deltaU -deltaW

33. hooke's law force of a spring
-KA
(No)(wavelength)=(Nn)(new wavelength)
m(v^2)/qvB
h(Fo)

34. formula to find the gauge pressure at the bottom of a pool
k|Q|/r^2
VI
roegh
net work = delta K

35. formula for period of a pendulum
2Pi * sqrt(l/g)
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2
nSintheta=nsintheta

36. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
BA
dSintheta=mwavelength
deltaU = deltaQ + deltaW

37. magnification equation
(Di)/(Do) or (Hi)/(Ho)
(I^2)RT
.5mV^2 + .5KA^2
qV

38. the force on a charge in an electric field
1/((1/C)+(1/C)..........)
constant pressure
qE
nSintheta=nsintheta

39. adibatic
opposite motion
qVB
no heat flow
.5CV^2 or .5 Q^2/C or .5QV

40. forgotten power equation
no force (right hand rule)
qrB/m
FV
pL/A

41. formula for power with Voltage and resistance
KI/r
GM*M/(r^2)
nSintheta=nsintheta
(V^2)/R

42. the units of power other than watts
inelastic collision
pL/A
sqrt(T/(m/))
joules/second

43. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
GM*M/(r^2)
KI/r
(N2)/(N1)

44. energy stored in a capacitor
AV=(A2)(V2)
.5CV^2 or .5 Q^2/C or .5QV
(hc/wavelength)=h(Fo) +(Vs)
(1/Do) + (1/Di) = (1/f)

45. natural frequency of a closed tube of length L
(hc/wavelength)=h(Fo) +(Vs)
Joules/Columb
elastic collision
1/4wavelength

46. heat required to melt a substance
e=mc^2
M(Lf)
-KA
n(Cv)(deltaT)

47. formula for Carnot efficiency
MC(deltaT)
(Wnet)/(Qin)
((Th) -(Tl))/(Th)
n(Cv)(deltaT)

48. formula for torque
FV
rF
V^2=(Vo)^2 +2a*change in x
net work = delta K

49. formula for efficiency of a heat engine using work out
(V^2)/r
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2
(Wnet)/(Qin)

50. formula for finding the work function of a metal if the cutoff frequency is known
1/4wavelength
V^2=(Vo)^2 +2a*change in x
pL/A
h(Fo)