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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 momentum of a photon
no heat flow
(Wnet)/(Qin)
deltaU = deltaQ + deltaW
h/wavelength

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
1/((1/C)+(1/C)..........)
(hc/wavelength)=h(Fo) +(Vs)
(I^2)RT
hc/wavelength

3. type of collision where K is not conserved
(3/2)nRdeltaT
inelastic collision
pL/A
no force (right hand rule)

4. formula for the wavelength (debroglie wavelength) of a moving particle
m(v^2)/qvB
qV
(N2)/(N1)
h/mv

5. equation of continuity
AV=(A2)(V2)
constant pressure
J= Ft
pL/A

6. formula for impulse involving momentum
d/2
no heat flow
mV -m(Vo)
G M/((d/2)^2)

7. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
rF
GM*M/(r^2)
hc/wavelength

8. isothermal
(I^2)RT
no temp change
elastic collision
.5KA^2

9. new wavelength of light as it enters a new substance
.5mV^2 + .5KA^2
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)
V+IR

10. force of gravity between two objects of mass m
KQ/r
(Fn)(mu)
Ed=V
GM*M/(r^2)

11. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
no heat flow
KI/r
Columbs/second
G M/((d/2)^2)

12. pressure
F/A
.5CV^2 or .5 Q^2/C or .5QV
nSintheta=nsintheta
mV -m(Vo)

13. heat required to melt a substance
((Th) -(Tl))/(Th)
perfectly inelastic collision
dSintheta=mwavelength
M(Lf)

14. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
pL/A
.5CV^2 or .5 Q^2/C or .5QV
(Di)/(Do) or (Hi)/(Ho)

15. isometric
constant volume
sqrt(3KT/m)
mV -m(Vo)
sqrt(T/(m/))

16. type of collision where objects stick togerther
net work = delta K
roeVg
perfectly inelastic collision
(Fn)(mu)

17. formula for critical angle
n(Cv)(deltaT)
k|Q|/r^2
M(Lf)
(N2)/(N1)

18. formula for finding the work function of a metal if the cutoff frequency is known
Q=CV
2nt=mwavelength
h(Fo)
Ed=V

19. resistance of a wire
dSintheta=mwavelength
pL/A
joules/second
sqrt(3KT/m)

20. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
no temp change
F/A
(V^2)/r
.5mV^2 + .5KA^2

21. radius of curvature of a charged particle as it enters a uniform magnetic field
BA
pL/A
(Fn)(mu)
m(v^2)/qvB

22. force of frction on an incline
AV=(A2)(V2)
deltaU -deltaW
(Patm) + (Pgauge)
mgCostheta(mu)d

23. formula for power with Voltage and resistance
.5CV^2 or .5 Q^2/C or .5QV
((Qin) -(Qout))/(Qin)
(V^2)/R
(Wnet)/(Qin)

24. natural frequency of an open tube of length L
0
1/2wavelength
e=mc^2
pL/A

25. electric potential a distance r from a charge
KQ/r
(Patm) + (Pgauge)
dSintheta=mwavelength
rF

26. snells law
elastic collision
nSintheta=nsintheta
BLv
roegh

27. force a charge in a Bfield
inelastic collision
perfectly inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
qVB

28. formula equating energy and mass
F/A
mV -m(Vo)
roeVg
e=mc^2

29. formula for Carnot efficiency
((Th) -(Tl))/(Th)
inelastic collision
1/4wavelength
frequency never changes for light problems

30. formula for torque
.5CV^2 or .5 Q^2/C or .5QV
rF
no heat flow
F/A

31. heat during an isometric process
m(v^2)/qvB
mgCostheta(mu)d
M(Lf)
n(Cv)(deltaT)

32. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
frequency never changes for light problems
1/2wavelength
pL/A

33. units for voltage other than volts
inelastic collision
Joules/Columb
constant pressure
J= Ft

34. velocity of a molecule of gas
F/A
(Wnet)/(Qin)
(Fn)(mu)
sqrt(3KT/m)

35. isobaric
.5mV^2 + .5KA^2
constant pressure
delta x = (Vo)t + .5at^2
opposite motion

36. formula for buoyant force
roeVg
rF
no force (right hand rule)
qV

37. formula for period of a pendulum
FV
2Pi * sqrt(l/g)
mgCostheta(mu)d
roegh

38. formula for efficiency not using work out
sqrt(T/(m/))
((Qin) -(Qout))/(Qin)
2Pi * sqrt(l/g)
F/A

39. formula to find the gauge pressure at the bottom of a pool
nSintheta=nsintheta
Ed=V
roegh
.5mV^2 + .5KA^2

40. formula for impluse involving time
constant pressure
qrB/m
J= Ft
(EMF)Rt/10

41. work energy theorum
d/2
constant pressure
net work = delta K
1/4wavelength

42. the force on a charge in an electric field
0
(1/Do) + (1/Di) = (1/f)
(I^2)RT
qE

43. what direction is friction?
qE
inelastic collision
0
opposite motion

44. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
frequency never changes for light problems
inelastic collision
K |q||Q|/r^2
(EMF)Rt/10

45. forgotten power equation
(hc/wavelength)=h(Fo) +(Vs)
(EMF)Rt/10
FV
opposite motion

46. formula for charge stored in a capciator
BA
1/4wavelength
Q=CV
mV -m(Vo)

47. heat during a cyclic process (net heat)
.5KA^2
G M/((d/2)^2)
deltaU -deltaW
dSintheta=mwavelength

48. velocity of waves on a string if tension is known
sqrt(T/(m/))
-KA
perfectly inelastic collision
k|Q|/r^2

49. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
rF
opposite motion
(hc/wavelength)=h(Fo) +(Vs)
KI/r

50. third kinematic
joules/second
1/((1/C)+(1/C)..........)
(EMF)Rt/10
V^2=(Vo)^2 +2a*change in x