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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. work energy theorum
opposite motion
net work = delta K
h(Fo)
GM*M/(r^2)

2. velocity of an electrion as it exitws from the hole
qrB/m
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))
(3/2)nRdeltaT

3. formula for power with current and voltage
(Fn)(mu)
1/4wavelength
VI
V+IR

4. formula for Carnot efficiency
no temp change
h(Fo)
mgCostheta(mu)d
((Th) -(Tl))/(Th)

5. force a charge in a Bfield
h/wavelength
qVB
e=mc^2
deltaU -deltaW

6. formula for energy of a spring mass when spring is at maximum displacement
2Pi * sqrt(l/g)
pL/A
.5KA^2
Q=CV

7. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
hc/wavelength
n(Cv)(deltaT)
.5mV^2 + .5KA^2
MC(deltaT)

8. formula for finding the magnetic field a distance r from a current carrying wire
(No)(wavelength)=(Nn)(new wavelength)
1/((1/C)+(1/C)..........)
KI/r
(Fn)(mu)

9. formula for centripetal acceleration
(V^2)/r
joules/second
no force (right hand rule)
(Di)/(Do) or (Hi)/(Ho)

10. formula relating voltage and electric field
J= Ft
pL/A
(No)(wavelength)=(Nn)(new wavelength)
Ed=V

11. new wavelength of light as it enters a new substance
2Pi * sqrt(l/g)
roeVg
MC(deltaT)
(No)(wavelength)=(Nn)(new wavelength)

12. isometric
(Fn)(mu)
AV=(A2)(V2)
constant volume
e=mc^2

13. energy stored in a capacitor
hc/wavelength
elastic collision
qrB/m
.5CV^2 or .5 Q^2/C or .5QV

14. electric potential a distance r from a charge
(Wnet)/(Qin)
KQ/r
L -LCostheta
((Th) -(Tl))/(Th)

15. what direction is friction?
1/2wavelength
hc/wavelength
opposite motion
(Wnet)/(Qin)

16. resistance of a wire
1/2wavelength
pL/A
dSintheta=mwavelength
VI

17. formula for power with current and resistance
(I^2)R
(N2)/(N1)
roegh
e=mc^2

18. formula for period of a pendulum
-KA
sqrt(3KT/m)
(No)(wavelength)=(Nn)(new wavelength)
2Pi * sqrt(l/g)

19. formula for impulse involving momentum
(Fn)(mu)
((Qin) -(Qout))/(Qin)
mV -m(Vo)
h/mv

20. units for voltage other than volts
Joules/Columb
.5KA^2
J= Ft
deltaU -deltaW

21. the electric force between two objects of charge Q
V = (Vo) + at
.5mV^2 + .5KA^2
K |q||Q|/r^2
nSintheta=nsintheta

22. isobaric
joules/second
F/A
constant pressure
hc/wavelength

23. formula for buoyant force
roeVg
KI/r
net work = delta K
no temp change

24. formula for finding the momentum of a photon
(EMF)Rt/10
E/B
h/wavelength
(I^2)R

25. natural frequency of a closed tube of length L
1/4wavelength
V = (Vo) + at
mV -m(Vo)
d/2

26. type of collision where objects stick togerther
elastic collision
(V^2)/r
mgCostheta(mu)d
perfectly inelastic collision

27. formula for efficiency not using work out
G M/((d/2)^2)
qVB
BA
((Qin) -(Qout))/(Qin)

28. adibatic
roegh
no heat flow
perfectly inelastic collision
qE

29. the units of power other than watts
V+IR
1/((1/C)+(1/C)..........)
joules/second
e=mc^2

30. heat during an isometric process
n(Cv)(deltaT)
((Qin) -(Qout))/(Qin)
((Th) -(Tl))/(Th)
h/wavelength

31. formula to find the gauge pressure at the bottom of a pool
no force (right hand rule)
opposite motion
sqrt(T/(m/))
roegh

32. isothermal
no temp change
no heat flow
no force (right hand rule)
deltaU -deltaW

33. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
V^2=(Vo)^2 +2a*change in x
mV -m(Vo)
nSintheta=nsintheta

34. third kinematic
(V^2)/r
V^2=(Vo)^2 +2a*change in x
(I^2)RT
GM*M/(r^2)

35. forgotten power equation
m(v^2)/qvB
opposite motion
FV
deltaU = deltaQ + deltaW

36. heat required to change temperature of a substance
MC(deltaT)
(V^2)/r
opposite motion
inelastic collision

37. EMF of a battery having internal resistance R
V+IR
.5KA^2
E/B
mV -m(Vo)

38. formula for constructive interference in a thin membrane with two phase changes
(No)(wavelength)=(Nn)(new wavelength)
2nt=mwavelength
2Pi * sqrt(l/g)
(Fn)(mu)

39. energy of a photon if wavelength is known
hc/wavelength
AV=(A2)(V2)
1/((1/C)+(1/C)..........)
rF

40. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
((Qin) -(Qout))/(Qin)
(hc/wavelength)=h(Fo) +(Vs)
qrB/m

41. formula for constructive interference in a diffraction grating
Q=CV
(I^2)R
dSintheta=mwavelength
perfectly inelastic collision

42. formula for power with Voltage and resistance
FV
(V^2)/R
0
((Qin) -(Qout))/(Qin)

43. force of gravity between two objects of mass m
GM*M/(r^2)
qVB
(No)(wavelength)=(Nn)(new wavelength)
e=mc^2

44. type of collision where K is not conserved
(Wnet)/(Qin)
deltaU = deltaQ + deltaW
V = (Vo) + at
inelastic collision

45. second kinematic
GM*M/(r^2)
delta x = (Vo)t + .5at^2
.5KA^2
qV

46. focal length of a mirror with radius d
-KA
0
(V^2)/r
d/2

47. pressure
Q=CV
d/2
BLv
F/A

48. new frequency of light as it enters a new substance
no heat flow
frequency never changes for light problems
sqrt(T/(m/))
elastic collision

49. force of frction on an incline
sqrt(T/(m/))
Q=CV
(Fn)(mu)
mgCostheta(mu)d

50. velocity of a molecule of gas
sqrt(3KT/m)
d/2
BA
-KA

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