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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 work function of a metal if the cutoff frequency is known
dSintheta=mwavelength
qE
e=mc^2
h(Fo)

2. formula to find the gauge pressure at the bottom of a pool
V^2=(Vo)^2 +2a*change in x
roegh
J= Ft
no temp change

3. magnification equation
no heat flow
(Di)/(Do) or (Hi)/(Ho)
2nt=mwavelength
constant pressure

4. EMF of a battery having internal resistance R
roeVg
V+IR
inelastic collision
constant volume

5. energy of a photon if wavelength is known
BA
hc/wavelength
joules/second
((Qin) -(Qout))/(Qin)

6. formula for height of the block (at the start of a pendulum string) in terms of theta and L
net work = delta K
opposite motion
L -LCostheta
(V^2)/r

7. new wavelength of light as it enters a new substance
1/2wavelength
(No)(wavelength)=(Nn)(new wavelength)
-KA
.5CV^2 or .5 Q^2/C or .5QV

8. focal length of a mirror with radius d
mgCostheta(mu)d
d/2
J= Ft
(V^2)/r

9. the units of current other than amps
1/4wavelength
opposite motion
Columbs/second
no heat flow

10. type of collision where K is not conserved
perfectly inelastic collision
(I^2)R
inelastic collision
nSintheta=nsintheta

11. forgotten power equation
J= Ft
V = (Vo) + at
FV
(I^2)RT

12. heat during a cyclic process (net heat)
elastic collision
deltaU -deltaW
MC(deltaT)
(No)(wavelength)=(Nn)(new wavelength)

13. formula for finding the momentum of a photon
h/wavelength
m(v^2)/qvB
e=mc^2
1/((1/C)+(1/C)..........)

14. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
perfectly inelastic collision
Ed=V
(Patm) + (Pgauge)

15. electric field in a distance r from a charge
roegh
k|Q|/r^2
(I^2)RT
Joules/Columb

16. type of collision where objects stick togerther
J= Ft
perfectly inelastic collision
.5KA^2
(1/Do) + (1/Di) = (1/f)

17. the force on a charge moving parallel to a magnetic field
qrB/m
no force (right hand rule)
(Patm) + (Pgauge)
M(Lf)

18. formula for impulse involving momentum
(3/2)nRdeltaT
delta x = (Vo)t + .5at^2
mV -m(Vo)
deltaU -deltaW

19. formula for Carnot efficiency
roegh
roeVg
((Th) -(Tl))/(Th)
M(Lf)

20. formula for period of a pendulum
2Pi * sqrt(l/g)
(N2)/(N1)
L -LCostheta
Ed=V

21. formula for finding the magnetic field a distance r from a current carrying wire
roegh
G M/((d/2)^2)
KI/r
no heat flow

22. total capacitance of capacitors in series
delta x = (Vo)t + .5at^2
hc/wavelength
1/((1/C)+(1/C)..........)
no heat flow

23. the units of power other than watts
h/wavelength
Q=CV
joules/second
qE

24. formula relating voltage and electric field
Columbs/second
Ed=V
(1/Do) + (1/Di) = (1/f)
(V^2)/R

25. velocity of a molecule of gas
AV=(A2)(V2)
sqrt(3KT/m)
0
no heat flow

26. formula for critical angle
rF
(N2)/(N1)
constant volume
KQ/r

27. equation for the first law of thermodynamics
V^2=(Vo)^2 +2a*change in x
nSintheta=nsintheta
deltaU = deltaQ + deltaW
opposite motion

28. isobaric
(hc/wavelength)=h(Fo) +(Vs)
constant pressure
MC(deltaT)
qV

29. radius of curvature of a charged particle as it enters a uniform magnetic field
Joules/Columb
(3/2)nRdeltaT
Q=CV
m(v^2)/qvB

30. force a charge in a Bfield
V+IR
frequency never changes for light problems
J= Ft
qVB

31. natural frequency of an open tube of length L
dSintheta=mwavelength
1/2wavelength
perfectly inelastic collision
m(v^2)/qvB

32. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
Q=CV
GM*M/(r^2)
no temp change

33. equation of continuity
(No)(wavelength)=(Nn)(new wavelength)
dSintheta=mwavelength
.5KA^2
AV=(A2)(V2)

34. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
joules/second
hc/wavelength
rF

35. voltage induced in a rod moving through a uniform magnetic field
BLv
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2
KI/r

36. the electric force between two objects of charge Q
Joules/Columb
constant pressure
K |q||Q|/r^2
F/A

37. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
elastic collision
FV
(hc/wavelength)=h(Fo) +(Vs)
constant pressure

38. type of collision where K is conserved
sqrt(3KT/m)
h/wavelength
frequency never changes for light problems
elastic collision

39. heat required to change temperature of a substance
Q=CV
MC(deltaT)
rF
qE

40. formula to find the absoluate pressure at the bottom of a pool
V = (Vo) + at
(No)(wavelength)=(Nn)(new wavelength)
VI
(Patm) + (Pgauge)

41. formula for finding magnetic flux
.5mV^2 + .5KA^2
BA
qV
no temp change

42. formula for efficiency of a heat engine using work out
opposite motion
(Wnet)/(Qin)
(1/Do) + (1/Di) = (1/f)
d/2

43. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
V^2=(Vo)^2 +2a*change in x
elastic collision
L -LCostheta
qV

44. isometric
(1/Do) + (1/Di) = (1/f)
constant volume
frequency never changes for light problems
Q=CV

45. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(Patm) + (Pgauge)
n(Cv)(deltaT)
(I^2)RT
Columbs/second

46. force of friction
net work = delta K
(Fn)(mu)
(hc/wavelength)=h(Fo) +(Vs)
BA

47. second kinematic
no heat flow
MC(deltaT)
(No)(wavelength)=(Nn)(new wavelength)
delta x = (Vo)t + .5at^2

48. electric potential a distance r from a charge
KQ/r
Joules/Columb
M(Lf)
deltaU -deltaW

49. formula for the wavelength (debroglie wavelength) of a moving particle
BA
sqrt(3KT/m)
Joules/Columb
h/mv

50. velocity of an electrion as it exitws from the hole
rF
-KA
sqrt(T/(m/))
qrB/m