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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. electric potential a distance r from a charge
inelastic collision
(V^2)/r
KQ/r
.5CV^2 or .5 Q^2/C or .5QV

2. new frequency of light as it enters a new substance
deltaU -deltaW
frequency never changes for light problems
no heat flow
perfectly inelastic collision

3. formula for efficiency of a heat engine using work out
e=mc^2
inelastic collision
(Wnet)/(Qin)
sqrt(3KT/m)

4. electric field in a distance r from a charge
BA
1/2wavelength
e=mc^2
k|Q|/r^2

5. formula relating voltage and electric field
dSintheta=mwavelength
Ed=V
pL/A
.5mV^2 + .5KA^2

6. work energy theorum
(N2)/(N1)
d/2
net work = delta K
1/2wavelength

7. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
(3/2)nRdeltaT
1/2wavelength
KI/r

8. heat required to melt a substance
M(Lf)
1/2wavelength
1/4wavelength
h/wavelength

9. formula to find the absoluate pressure at the bottom of a pool
(3/2)nRdeltaT
.5mV^2 + .5KA^2
d/2
(Patm) + (Pgauge)

10. new wavelength of light as it enters a new substance
sqrt(T/(m/))
Joules/Columb
(Fn)(mu)
(No)(wavelength)=(Nn)(new wavelength)

11. velocity of waves on a string if tension is known
perfectly inelastic collision
m(v^2)/qvB
qV
sqrt(T/(m/))

12. type of collision where K is conserved
dSintheta=mwavelength
(EMF)Rt/10
Q=CV
elastic collision

13. formula for power with Voltage and resistance
h/wavelength
(V^2)/R
.5CV^2 or .5 Q^2/C or .5QV
n(Cv)(deltaT)

14. formula for finding magnetic flux
BA
Ed=V
nSintheta=nsintheta
deltaU -deltaW

15. heat during a cyclic process (net heat)
pL/A
delta x = (Vo)t + .5at^2
(V^2)/r
deltaU -deltaW

16. hooke's law force of a spring
nSintheta=nsintheta
1/4wavelength
-KA
no heat flow

17. energy of a photon if wavelength is known
delta x = (Vo)t + .5at^2
h/wavelength
hc/wavelength
inelastic collision

18. natural frequency of an open tube of length L
perfectly inelastic collision
2Pi * sqrt(l/g)
n(Cv)(deltaT)
1/2wavelength

19. formula equating energy and mass
(No)(wavelength)=(Nn)(new wavelength)
k|Q|/r^2
e=mc^2
(V^2)/R

20. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
no temp change
delta x = (Vo)t + .5at^2
h(Fo)

21. change in internal energy during a cyclic process
0
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)
pL/A

22. formula to find the gauge pressure at the bottom of a pool
e=mc^2
0
roegh
(Fn)(mu)

23. type of collision where K is not conserved
inelastic collision
no temp change
m(v^2)/qvB
nSintheta=nsintheta

24. isothermal
no temp change
h/wavelength
KQ/r
(1/Do) + (1/Di) = (1/f)

25. heat during an isometric process
1/((1/C)+(1/C)..........)
n(Cv)(deltaT)
h/wavelength
KI/r

26. resistance of a wire
((Th) -(Tl))/(Th)
((Qin) -(Qout))/(Qin)
(hc/wavelength)=h(Fo) +(Vs)
pL/A

27. formula for power with current and voltage
(Patm) + (Pgauge)
mgCostheta(mu)d
(No)(wavelength)=(Nn)(new wavelength)
VI

28. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
roegh
(EMF)Rt/10
V = (Vo) + at

29. formula for Carnot efficiency
((Th) -(Tl))/(Th)
qV
constant pressure
(Patm) + (Pgauge)

30. snells law
nSintheta=nsintheta
.5KA^2
L -LCostheta
opposite motion

31. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
h/wavelength
perfectly inelastic collision
.5CV^2 or .5 Q^2/C or .5QV

32. pressure
F/A
MC(deltaT)
(No)(wavelength)=(Nn)(new wavelength)
Joules/Columb

33. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
V+IR
m(v^2)/qvB
BLv

34. formula for height of the block (at the start of a pendulum string) in terms of theta and L
.5KA^2
delta x = (Vo)t + .5at^2
BLv
L -LCostheta

35. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
GM*M/(r^2)
e=mc^2
E/B
joules/second

36. formula for buoyant force
roeVg
(3/2)nRdeltaT
V+IR
(hc/wavelength)=h(Fo) +(Vs)

37. the electric force between two objects of charge Q
no force (right hand rule)
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
Joules/Columb

38. velocity of a molecule of gas
G M/((d/2)^2)
-KA
sqrt(3KT/m)
sqrt(T/(m/))

39. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
BA
deltaU = deltaQ + deltaW
qV
elastic collision

40. formula for critical angle
qV
KQ/r
perfectly inelastic collision
(N2)/(N1)

41. third kinematic
F/A
V^2=(Vo)^2 +2a*change in x
Columbs/second
qE

42. force a charge in a Bfield
(EMF)Rt/10
qVB
((Qin) -(Qout))/(Qin)
(V^2)/R

43. isometric
(I^2)RT
constant volume
deltaU -deltaW
constant pressure

44. what direction is friction?
(V^2)/r
n(Cv)(deltaT)
constant volume
opposite motion

45. voltage induced in a rod moving through a uniform magnetic field
k|Q|/r^2
BLv
(1/Do) + (1/Di) = (1/f)
nSintheta=nsintheta

46. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
GM*M/(r^2)
F/A
G M/((d/2)^2)
Joules/Columb

47. force of gravity between two objects of mass m
sqrt(3KT/m)
GM*M/(r^2)
F/A
qVB

48. formula for charge stored in a capciator
qrB/m
F/A
hc/wavelength
Q=CV

49. formula for change in internal energy in a cosnstat volume PV process
((Qin) -(Qout))/(Qin)
(Patm) + (Pgauge)
(3/2)nRdeltaT
qV

50. focal length of a mirror with radius d
1/4wavelength
d/2
(3/2)nRdeltaT
qrB/m