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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. formula for energy of a spring mass when spring is at maximum displacement
((Qin) -(Qout))/(Qin)
F/A
.5KA^2
V^2=(Vo)^2 +2a*change in x

2. formula for Carnot efficiency
MC(deltaT)
K |q||Q|/r^2
.5CV^2 or .5 Q^2/C or .5QV
((Th) -(Tl))/(Th)

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

4. formula for period of a pendulum
n(Cv)(deltaT)
net work = delta K
(Patm) + (Pgauge)
2Pi * sqrt(l/g)

5. voltage induced in a rod moving through a uniform magnetic field
AV=(A2)(V2)
roegh
E/B
BLv

6. type of collision where objects stick togerther
qV
qVB
perfectly inelastic collision
hc/wavelength

7. equation for the first law of thermodynamics
opposite motion
qV
deltaU = deltaQ + deltaW
sqrt(3KT/m)

8. the units of power other than watts
2nt=mwavelength
1/((1/C)+(1/C)..........)
joules/second
(Wnet)/(Qin)

9. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
BA
G M/((d/2)^2)
e=mc^2
KI/r

10. type of collision where K is not conserved
sqrt(3KT/m)
inelastic collision
FV
opposite motion

11. force of gravity between two objects of mass m
h(Fo)
k|Q|/r^2
h/wavelength
GM*M/(r^2)

12. formula for charge stored in a capciator
dSintheta=mwavelength
V+IR
Q=CV
qE

13. formula to find the gauge pressure at the bottom of a pool
.5KA^2
((Th) -(Tl))/(Th)
-KA
roegh

14. focal length of a mirror with radius d
d/2
-KA
opposite motion
k|Q|/r^2

15. 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
nSintheta=nsintheta
F/A
no force (right hand rule)

16. formula for efficiency not using work out
n(Cv)(deltaT)
no force (right hand rule)
((Qin) -(Qout))/(Qin)
no temp change

17. the force on a charge moving parallel to a magnetic field
M(Lf)
qV
no force (right hand rule)
hc/wavelength

18. energy stored in a capacitor
constant volume
.5CV^2 or .5 Q^2/C or .5QV
(Fn)(mu)
(1/Do) + (1/Di) = (1/f)

19. the units of current other than amps
(Fn)(mu)
inelastic collision
Columbs/second
(Wnet)/(Qin)

20. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
F/A
(I^2)RT
no temp change

21. formula for critical angle
V^2=(Vo)^2 +2a*change in x
(1/Do) + (1/Di) = (1/f)
M(Lf)
(N2)/(N1)

22. formula for finding the momentum of a photon
(Di)/(Do) or (Hi)/(Ho)
roegh
h/wavelength
.5KA^2

23. velocity of a molecule of gas
1/((1/C)+(1/C)..........)
(I^2)R
sqrt(3KT/m)
m(v^2)/qvB

24. natural frequency of a closed tube of length L
no force (right hand rule)
(Patm) + (Pgauge)
net work = delta K
1/4wavelength

25. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
BA
(I^2)R
V+IR

26. formula equating energy and mass
((Qin) -(Qout))/(Qin)
qE
frequency never changes for light problems
e=mc^2

27. heat during an isometric process
M(Lf)
n(Cv)(deltaT)
mV -m(Vo)
(Wnet)/(Qin)

28. units for voltage other than volts
Joules/Columb
L -LCostheta
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV

29. heat required to change temperature of a substance
MC(deltaT)
joules/second
V+IR
V = (Vo) + at

30. EMF of a battery having internal resistance R
inelastic collision
V+IR
rF
m(v^2)/qvB

31. electric potential a distance r from a charge
constant pressure
h/wavelength
2Pi * sqrt(l/g)
KQ/r

32. force of friction
no force (right hand rule)
Columbs/second
M(Lf)
(Fn)(mu)

33. third kinematic
(I^2)R
V^2=(Vo)^2 +2a*change in x
Q=CV
(N2)/(N1)

34. formula for buoyant force
no force (right hand rule)
e=mc^2
AV=(A2)(V2)
roeVg

35. formula for finding the magnetic field a distance r from a current carrying wire
sqrt(3KT/m)
h(Fo)
KI/r
(Fn)(mu)

36. formula for power with Voltage and resistance
V^2=(Vo)^2 +2a*change in x
J= Ft
(V^2)/R
mV -m(Vo)

37. formula for change in internal energy in a cosnstat volume PV process
deltaU = deltaQ + deltaW
d/2
(3/2)nRdeltaT
no force (right hand rule)

38. formula for power with current and voltage
sqrt(3KT/m)
(N2)/(N1)
FV
VI

39. lens/mirror equation
h/mv
(1/Do) + (1/Di) = (1/f)
((Qin) -(Qout))/(Qin)
k|Q|/r^2

40. first kinematic
1/2wavelength
V = (Vo) + at
sqrt(3KT/m)
joules/second

41. heat required to melt a substance
deltaU -deltaW
L -LCostheta
M(Lf)
perfectly inelastic collision

42. force of frction on an incline
0
(3/2)nRdeltaT
FV
mgCostheta(mu)d

43. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
net work = delta K
nSintheta=nsintheta
h/mv

44. isobaric
constant pressure
pL/A
k|Q|/r^2
FV

45. the electric force between two objects of charge Q
K |q||Q|/r^2
V = (Vo) + at
((Qin) -(Qout))/(Qin)
(I^2)RT

46. natural frequency of an open tube of length L
1/2wavelength
k|Q|/r^2
GM*M/(r^2)
(3/2)nRdeltaT

47. pressure
F/A
GM*M/(r^2)
sqrt(3KT/m)
d/2

48. second kinematic
delta x = (Vo)t + .5at^2
m(v^2)/qvB
VI
(3/2)nRdeltaT

49. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
AV=(A2)(V2)
d/2
(Fn)(mu)

50. formula for power with current and resistance
(I^2)R
.5mV^2 + .5KA^2
V^2=(Vo)^2 +2a*change in x
V = (Vo) + at