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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.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
G M/((d/2)^2)
1/((1/C)+(1/C)..........)
L -LCostheta

2. voltage induced in a rod moving through a uniform magnetic field
BLv
1/4wavelength
KQ/r
K |q||Q|/r^2

3. type of collision where K is conserved
deltaU -deltaW
elastic collision
KI/r
h/mv

4. electric field in a distance r from a charge
k|Q|/r^2
-KA
joules/second
qVB

5. heat required to melt a substance
(I^2)R
.5KA^2
roeVg
M(Lf)

6. velocity of waves on a string if tension is known
h/wavelength
sqrt(T/(m/))
no temp change
2Pi * sqrt(l/g)

7. energy of a photon if wavelength is known
no temp change
V = (Vo) + at
hc/wavelength
-KA

8. equation for the first law of thermodynamics
2Pi * sqrt(l/g)
deltaU = deltaQ + deltaW
1/2wavelength
(1/Do) + (1/Di) = (1/f)

9. formula for efficiency not using work out
1/2wavelength
E/B
sqrt(T/(m/))
((Qin) -(Qout))/(Qin)

10. pressure
sqrt(T/(m/))
elastic collision
VI
F/A

11. isometric
mgCostheta(mu)d
-KA
constant volume
hc/wavelength

12. formula for buoyant force
roeVg
no force (right hand rule)
h/wavelength
V^2=(Vo)^2 +2a*change in x

13. snells law
(V^2)/R
-KA
nSintheta=nsintheta
net work = delta K

14. formula for constructive interference in a thin membrane with two phase changes
((Th) -(Tl))/(Th)
L -LCostheta
BA
2nt=mwavelength

15. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
.5KA^2
Joules/Columb
(EMF)Rt/10
L -LCostheta

16. formula for height of the block (at the start of a pendulum string) in terms of theta and L
BA
L -LCostheta
perfectly inelastic collision
qV

17. formula for Carnot efficiency
0
((Th) -(Tl))/(Th)
(3/2)nRdeltaT
Ed=V

18. formula for critical angle
elastic collision
(N2)/(N1)
deltaU = deltaQ + deltaW
1/2wavelength

19. electric potential a distance r from a charge
KQ/r
sqrt(3KT/m)
K |q||Q|/r^2
nSintheta=nsintheta

20. formula for finding magnetic flux
V^2=(Vo)^2 +2a*change in x
(V^2)/r
BA
1/4wavelength

21. formula to find the gauge pressure at the bottom of a pool
L -LCostheta
deltaU = deltaQ + deltaW
roegh
constant pressure

22. the electric force between two objects of charge Q
K |q||Q|/r^2
AV=(A2)(V2)
(Patm) + (Pgauge)
V = (Vo) + at

23. natural frequency of an open tube of length L
M(Lf)
dSintheta=mwavelength
elastic collision
1/2wavelength

24. formula to find the absoluate pressure at the bottom of a pool
no force (right hand rule)
h/wavelength
(Patm) + (Pgauge)
G M/((d/2)^2)

25. force of frction on an incline
rF
sqrt(3KT/m)
(1/Do) + (1/Di) = (1/f)
mgCostheta(mu)d

26. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
KI/r
E/B
h(Fo)
deltaU -deltaW

27. formula for finding the work function of a metal if the cutoff frequency is known
(V^2)/r
(N2)/(N1)
(No)(wavelength)=(Nn)(new wavelength)
h(Fo)

28. heat required to change temperature of a substance
rF
qV
MC(deltaT)
m(v^2)/qvB

29. the force on a charge moving parallel to a magnetic field
n(Cv)(deltaT)
no force (right hand rule)
hc/wavelength
h/wavelength

30. formula equating energy and mass
elastic collision
BLv
(Wnet)/(Qin)
e=mc^2

31. adibatic
((Qin) -(Qout))/(Qin)
no heat flow
KI/r
0

32. formula for change in internal energy in a cosnstat volume PV process
.5mV^2 + .5KA^2
opposite motion
(3/2)nRdeltaT
h/wavelength

33. formula for the wavelength (debroglie wavelength) of a moving particle
constant pressure
h/mv
2nt=mwavelength
Joules/Columb

34. new frequency of light as it enters a new substance
roegh
.5CV^2 or .5 Q^2/C or .5QV
BA
frequency never changes for light problems

35. formula for period of a pendulum
qV
constant pressure
roeVg
2Pi * sqrt(l/g)

36. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
K |q||Q|/r^2
d/2
(I^2)RT
sqrt(3KT/m)

37. heat during an isometric process
((Th) -(Tl))/(Th)
n(Cv)(deltaT)
1/2wavelength
k|Q|/r^2

38. EMF of a battery having internal resistance R
inelastic collision
Joules/Columb
opposite motion
V+IR

39. total capacitance of capacitors in series
.5KA^2
((Qin) -(Qout))/(Qin)
no force (right hand rule)
1/((1/C)+(1/C)..........)

40. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(EMF)Rt/10
J= Ft
.5mV^2 + .5KA^2
qVB

41. second kinematic
delta x = (Vo)t + .5at^2
-KA
qVB
(EMF)Rt/10

42. the units of current other than amps
h(Fo)
Columbs/second
.5mV^2 + .5KA^2
delta x = (Vo)t + .5at^2

43. formula for efficiency of a heat engine using work out
AV=(A2)(V2)
roeVg
GM*M/(r^2)
(Wnet)/(Qin)

44. third kinematic
K |q||Q|/r^2
V^2=(Vo)^2 +2a*change in x
-KA
((Th) -(Tl))/(Th)

45. 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)
MC(deltaT)
2nt=mwavelength
(3/2)nRdeltaT

46. velocity of a molecule of gas
hc/wavelength
mgCostheta(mu)d
sqrt(3KT/m)
perfectly inelastic collision

47. radius of curvature of a charged particle as it enters a uniform magnetic field
no heat flow
h(Fo)
m(v^2)/qvB
KQ/r

48. lens/mirror equation
F/A
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
Ed=V

49. force a charge in a Bfield
VI
qVB
Columbs/second
KQ/r

50. formula for impluse involving time
deltaU = deltaQ + deltaW
constant pressure
J= Ft
1/((1/C)+(1/C)..........)