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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.
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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. the force on a charge in an electric field
inelastic collision
qE
no temp change
roegh

2. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
VI
sqrt(T/(m/))
E/B

3. formula for finding magnetic flux
BA
frequency never changes for light problems
roegh
net work = delta K

4. formula for height of the block (at the start of a pendulum string) in terms of theta and L
V+IR
1/2wavelength
L -LCostheta
inelastic collision

5. force a charge in a Bfield
no heat flow
qVB
BLv
(1/Do) + (1/Di) = (1/f)

6. force of gravity between two objects of mass m
(V^2)/r
GM*M/(r^2)
joules/second
roeVg

7. 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
perfectly inelastic collision
(Fn)(mu)
1/2wavelength

8. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
elastic collision
(hc/wavelength)=h(Fo) +(Vs)
constant volume
no temp change

9. second kinematic
Joules/Columb
Columbs/second
delta x = (Vo)t + .5at^2
roegh

10. formula for impulse involving momentum
h/wavelength
n(Cv)(deltaT)
roeVg
mV -m(Vo)

11. formula for the wavelength (debroglie wavelength) of a moving particle
roegh
(Di)/(Do) or (Hi)/(Ho)
h/mv
BA

12. work energy theorum
Joules/Columb
net work = delta K
GM*M/(r^2)
(I^2)RT

13. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(I^2)RT
V = (Vo) + at
m(v^2)/qvB
qrB/m

14. the force on a charge moving parallel to a magnetic field
(EMF)Rt/10
qVB
GM*M/(r^2)
no force (right hand rule)

15. formula for critical angle
J= Ft
mgCostheta(mu)d
(N2)/(N1)
1/2wavelength

16. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
M(Lf)
(Fn)(mu)
mV -m(Vo)

17. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
opposite motion
BA
inelastic collision

18. equation for the first law of thermodynamics
2nt=mwavelength
(hc/wavelength)=h(Fo) +(Vs)
deltaU = deltaQ + deltaW
2Pi * sqrt(l/g)

19. snells law
nSintheta=nsintheta
V+IR
.5CV^2 or .5 Q^2/C or .5QV
delta x = (Vo)t + .5at^2

20. 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)
BA
perfectly inelastic collision
Q=CV

21. velocity of waves on a string if tension is known
rF
VI
((Qin) -(Qout))/(Qin)
sqrt(T/(m/))

22. isobaric
V+IR
constant pressure
dSintheta=mwavelength
-KA

23. formula for finding the momentum of a photon
h/wavelength
VI
.5CV^2 or .5 Q^2/C or .5QV
mgCostheta(mu)d

24. energy stored in a capacitor
L -LCostheta
(I^2)R
.5CV^2 or .5 Q^2/C or .5QV
joules/second

25. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
roegh
h/wavelength
no heat flow

26. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
.5CV^2 or .5 Q^2/C or .5QV
e=mc^2
KI/r

27. new wavelength of light as it enters a new substance
-KA
h/wavelength
(No)(wavelength)=(Nn)(new wavelength)
deltaU -deltaW

28. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
e=mc^2
mV -m(Vo)
.5mV^2 + .5KA^2

29. change in internal energy during a cyclic process
K |q||Q|/r^2
qE
(hc/wavelength)=h(Fo) +(Vs)
0

30. formula relating voltage and electric field
qE
qV
Ed=V
elastic collision

31. type of collision where objects stick togerther
h(Fo)
inelastic collision
K |q||Q|/r^2
perfectly inelastic collision

32. voltage induced in a rod moving through a uniform magnetic field
BLv
0
k|Q|/r^2
(V^2)/r

33. force of friction
frequency never changes for light problems
(Fn)(mu)
-KA
joules/second

34. hooke's law force of a spring
d/2
-KA
qVB
(I^2)R

35. formula for efficiency of a heat engine using work out
L -LCostheta
qVB
V = (Vo) + at
(Wnet)/(Qin)

36. resistance of a wire
roegh
.5mV^2 + .5KA^2
FV
pL/A

37. what direction is friction?
-KA
opposite motion
KI/r
M(Lf)

38. heat required to change temperature of a substance
MC(deltaT)
joules/second
no force (right hand rule)
qE

39. formula equating energy and mass
F/A
.5KA^2
e=mc^2
1/((1/C)+(1/C)..........)

40. natural frequency of an open tube of length L
M(Lf)
1/2wavelength
V = (Vo) + at
opposite motion

41. formula for power with Voltage and resistance
(V^2)/R
MC(deltaT)
constant volume
L -LCostheta

42. first kinematic
net work = delta K
V = (Vo) + at
sqrt(3KT/m)
.5CV^2 or .5 Q^2/C or .5QV

43. velocity of a molecule of gas
BLv
(hc/wavelength)=h(Fo) +(Vs)
sqrt(3KT/m)
delta x = (Vo)t + .5at^2

44. units for voltage other than volts
VI
(N2)/(N1)
Joules/Columb
sqrt(3KT/m)

45. formula for torque
constant pressure
rF
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb

46. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
m(v^2)/qvB
BA
L -LCostheta

47. heat during a cyclic process (net heat)
deltaU = deltaQ + deltaW
deltaU -deltaW
.5KA^2
no temp change

48. equation of continuity
e=mc^2
AV=(A2)(V2)
qVB
Q=CV

49. formula for constructive interference in a diffraction grating
deltaU = deltaQ + deltaW
rF
dSintheta=mwavelength
hc/wavelength

50. the units of current other than amps
perfectly inelastic collision
Columbs/second
(Wnet)/(Qin)
mgCostheta(mu)d