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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 stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
roeVg
FV
nSintheta=nsintheta

2. the units of current other than amps
nSintheta=nsintheta
FV
(Fn)(mu)
Columbs/second

3. formula for impluse involving time
roeVg
2Pi * sqrt(l/g)
.5CV^2 or .5 Q^2/C or .5QV
J= Ft

4. the force on a charge moving parallel to a magnetic field
sqrt(T/(m/))
no force (right hand rule)
(No)(wavelength)=(Nn)(new wavelength)
(EMF)Rt/10

5. first kinematic
G M/((d/2)^2)
KQ/r
V = (Vo) + at
K |q||Q|/r^2

6. natural frequency of an open tube of length L
V = (Vo) + at
1/4wavelength
Columbs/second
1/2wavelength

7. second kinematic
(V^2)/r
k|Q|/r^2
n(Cv)(deltaT)
delta x = (Vo)t + .5at^2

8. pressure
d/2
qVB
-KA
F/A

9. snells law
(Fn)(mu)
(hc/wavelength)=h(Fo) +(Vs)
nSintheta=nsintheta
deltaU -deltaW

10. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
inelastic collision
(1/Do) + (1/Di) = (1/f)
FV

11. formula for finding the magnetic field a distance r from a current carrying wire
(Wnet)/(Qin)
frequency never changes for light problems
nSintheta=nsintheta
KI/r

12. heat required to change temperature of a substance
V^2=(Vo)^2 +2a*change in x
.5mV^2 + .5KA^2
constant pressure
MC(deltaT)

13. heat required to melt a substance
KQ/r
M(Lf)
.5KA^2
roegh

14. radius of curvature of a charged particle as it enters a uniform magnetic field
mV -m(Vo)
elastic collision
m(v^2)/qvB
(Fn)(mu)

15. formula for torque
rF
deltaU = deltaQ + deltaW
no force (right hand rule)
opposite motion

16. isometric
constant volume
opposite motion
2Pi * sqrt(l/g)
(EMF)Rt/10

17. formula for finding the momentum of a photon
rF
h/wavelength
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV

18. equation for the first law of thermodynamics
qVB
n(Cv)(deltaT)
deltaU = deltaQ + deltaW
1/2wavelength

19. the electric force between two objects of charge Q
((Qin) -(Qout))/(Qin)
constant pressure
K |q||Q|/r^2
constant volume

20. third kinematic
F/A
.5mV^2 + .5KA^2
h(Fo)
V^2=(Vo)^2 +2a*change in x

21. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
h/wavelength
1/2wavelength
qV
.5CV^2 or .5 Q^2/C or .5QV

22. EMF of a battery having internal resistance R
BLv
BA
V+IR
pL/A

23. work energy theorum
net work = delta K
(I^2)RT
e=mc^2
(V^2)/R

24. velocity of a molecule of gas
constant pressure
KI/r
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)

25. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
elastic collision
BA
mV -m(Vo)

26. heat during an isometric process
(I^2)R
Columbs/second
k|Q|/r^2
n(Cv)(deltaT)

27. formula for the wavelength (debroglie wavelength) of a moving particle
V^2=(Vo)^2 +2a*change in x
(hc/wavelength)=h(Fo) +(Vs)
h/mv
2Pi * sqrt(l/g)

28. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
E/B
2nt=mwavelength
.5mV^2 + .5KA^2
h/mv

29. formula for power with Voltage and resistance
no force (right hand rule)
(V^2)/R
constant volume
sqrt(T/(m/))

30. lens/mirror equation
m(v^2)/qvB
rF
perfectly inelastic collision
(1/Do) + (1/Di) = (1/f)

31. force of friction
(N2)/(N1)
K |q||Q|/r^2
(Fn)(mu)
1/2wavelength

32. formula for power with current and voltage
Ed=V
VI
k|Q|/r^2
(EMF)Rt/10

33. change in internal energy during a cyclic process
0
opposite motion
constant volume
((Th) -(Tl))/(Th)

34. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
-KA
no force (right hand rule)
constant volume

35. natural frequency of a closed tube of length L
opposite motion
KQ/r
1/4wavelength
e=mc^2

36. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
roegh
(EMF)Rt/10
delta x = (Vo)t + .5at^2
FV

37. 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 = deltaQ + deltaW
n(Cv)(deltaT)
(I^2)RT
perfectly inelastic collision

38. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
2nt=mwavelength
no heat flow
Ed=V

39. formula for finding the work function of a metal if the cutoff frequency is known
constant pressure
frequency never changes for light problems
h(Fo)
rF

40. velocity of waves on a string if tension is known
(Patm) + (Pgauge)
sqrt(T/(m/))
n(Cv)(deltaT)
V^2=(Vo)^2 +2a*change in x

41. energy stored in a capacitor
sqrt(3KT/m)
E/B
(No)(wavelength)=(Nn)(new wavelength)
.5CV^2 or .5 Q^2/C or .5QV

42. type of collision where K is conserved
h(Fo)
G M/((d/2)^2)
elastic collision
BLv

43. energy of a photon if wavelength is known
Q=CV
.5mV^2 + .5KA^2
mgCostheta(mu)d
hc/wavelength

44. forgotten power equation
(1/Do) + (1/Di) = (1/f)
0
FV
BLv

45. formula for charge stored in a capciator
Q=CV
no force (right hand rule)
mV -m(Vo)
net work = delta K

46. isothermal
(V^2)/R
Q=CV
BA
no temp change

47. type of collision where objects stick togerther
G M/((d/2)^2)
perfectly inelastic collision
n(Cv)(deltaT)
elastic collision

48. adibatic
no heat flow
frequency never changes for light problems
roegh
hc/wavelength

49. formula for efficiency not using work out
e=mc^2
rF
perfectly inelastic collision
((Qin) -(Qout))/(Qin)

50. voltage induced in a rod moving through a uniform magnetic field
deltaU -deltaW
elastic collision
rF
BLv