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AP Physics Formulas

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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. forgotten power equation
FV
delta x = (Vo)t + .5at^2
roeVg
(hc/wavelength)=h(Fo) +(Vs)

2. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
1/2wavelength
hc/wavelength
J= Ft

3. force of frction on an incline
mgCostheta(mu)d
(Fn)(mu)
pL/A
BLv

4. formula for Carnot efficiency
((Th) -(Tl))/(Th)
1/4wavelength
no temp change
.5KA^2

5. energy stored in a capacitor
(Di)/(Do) or (Hi)/(Ho)
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV
nSintheta=nsintheta

6. adibatic
deltaU -deltaW
-KA
k|Q|/r^2
no heat flow

7. formula for power with current and resistance
qrB/m
(I^2)R
GM*M/(r^2)
KQ/r

8. natural frequency of a closed tube of length L
opposite motion
M(Lf)
d/2
1/4wavelength

9. formula to find the absoluate pressure at the bottom of a pool
constant volume
(Patm) + (Pgauge)
GM*M/(r^2)
V+IR

10. formula for power with Voltage and resistance
frequency never changes for light problems
sqrt(T/(m/))
(Di)/(Do) or (Hi)/(Ho)
(V^2)/R

11. formula equating energy and mass
k|Q|/r^2
rF
e=mc^2
dSintheta=mwavelength

12. equation for the first law of thermodynamics
2nt=mwavelength
F/A
deltaU = deltaQ + deltaW
1/((1/C)+(1/C)..........)

13. heat required to change temperature of a substance
mV -m(Vo)
F/A
MC(deltaT)
e=mc^2

14. formula for energy of a spring mass when spring is at maximum displacement
net work = delta K
(Patm) + (Pgauge)
.5KA^2
BA

15. new frequency of light as it enters a new substance
(V^2)/r
E/B
K |q||Q|/r^2
frequency never changes for light problems

16. formula for finding the work function of a metal if the cutoff frequency is known
MC(deltaT)
qrB/m
h(Fo)
V^2=(Vo)^2 +2a*change in x

17. formula for change in internal energy in a cosnstat volume PV process
2nt=mwavelength
(3/2)nRdeltaT
1/4wavelength
KI/r

18. second kinematic
Joules/Columb
delta x = (Vo)t + .5at^2
roeVg
BLv

19. hooke's law force of a spring
-KA
BA
V = (Vo) + at
qV

20. total capacitance of capacitors in series
F/A
.5KA^2
mV -m(Vo)
1/((1/C)+(1/C)..........)

21. new wavelength of light as it enters a new substance
nSintheta=nsintheta
(No)(wavelength)=(Nn)(new wavelength)
(V^2)/R
V^2=(Vo)^2 +2a*change in x

22. the units of power other than watts
joules/second
.5KA^2
Ed=V
AV=(A2)(V2)

23. velocity of waves on a string if tension is known
sqrt(T/(m/))
KQ/r
no force (right hand rule)
n(Cv)(deltaT)

24. the force on a charge in an electric field
.5mV^2 + .5KA^2
GM*M/(r^2)
qE
(hc/wavelength)=h(Fo) +(Vs)

25. formula for the wavelength (debroglie wavelength) of a moving particle
(N2)/(N1)
h/mv
constant pressure
k|Q|/r^2

26. formula for finding the magnetic field a distance r from a current carrying wire
sqrt(3KT/m)
h/wavelength
.5KA^2
KI/r

27. heat during an isometric process
n(Cv)(deltaT)
(No)(wavelength)=(Nn)(new wavelength)
-KA
rF

28. lens/mirror equation
(Patm) + (Pgauge)
(1/Do) + (1/Di) = (1/f)
J= Ft
(Di)/(Do) or (Hi)/(Ho)

29. energy of a photon if wavelength is known
J= Ft
hc/wavelength
sqrt(3KT/m)
Joules/Columb

30. heat required to melt a substance
roeVg
M(Lf)
h(Fo)
1/4wavelength

31. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
(hc/wavelength)=h(Fo) +(Vs)
k|Q|/r^2
net work = delta K

32. equation of continuity
deltaU = deltaQ + deltaW
((Th) -(Tl))/(Th)
AV=(A2)(V2)
V+IR

33. first kinematic
Q=CV
M(Lf)
pL/A
V = (Vo) + at

34. units for voltage other than volts
nSintheta=nsintheta
Joules/Columb
V+IR
FV

35. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(Fn)(mu)
h/wavelength
no force (right hand rule)
(I^2)RT

36. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
h(Fo)
elastic collision
qVB

37. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
Joules/Columb
G M/((d/2)^2)
deltaU -deltaW
qE

38. electric potential a distance r from a charge
V = (Vo) + at
L -LCostheta
KQ/r
mgCostheta(mu)d

39. EMF of a battery having internal resistance R
V+IR
qE
net work = delta K
inelastic collision

40. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
roegh
(hc/wavelength)=h(Fo) +(Vs)
rF
K |q||Q|/r^2

41. the force on a charge moving parallel to a magnetic field
-KA
no force (right hand rule)
.5mV^2 + .5KA^2
constant volume

42. focal length of a mirror with radius d
d/2
(EMF)Rt/10
((Th) -(Tl))/(Th)
frequency never changes for light problems

43. formula for centripetal acceleration
(V^2)/r
V^2=(Vo)^2 +2a*change in x
n(Cv)(deltaT)
J= Ft

44. type of collision where K is conserved
(Wnet)/(Qin)
-KA
elastic collision
.5KA^2

45. pressure
deltaU -deltaW
joules/second
F/A
h/wavelength

46. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
m(v^2)/qvB
G M/((d/2)^2)
F/A

47. force of friction
mV -m(Vo)
(Fn)(mu)
h(Fo)
(EMF)Rt/10

48. formula for torque
rF
opposite motion
1/4wavelength
d/2

49. heat during a cyclic process (net heat)
k|Q|/r^2
no temp change
(EMF)Rt/10
deltaU -deltaW

50. resistance of a wire
d/2
pL/A
e=mc^2
V^2=(Vo)^2 +2a*change in x

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AP Physics Formulas

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