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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. formula for finding the magnetic field a distance r from a current carrying wire
n(Cv)(deltaT)
opposite motion
KI/r
inelastic collision

2. hooke's law force of a spring
-KA
elastic collision
h(Fo)
Joules/Columb

3. formula to find the gauge pressure at the bottom of a pool
roegh
V = (Vo) + at
mV -m(Vo)
h/wavelength

4. type of collision where objects stick togerther
Columbs/second
perfectly inelastic collision
(Patm) + (Pgauge)
BLv

5. formula for efficiency not using work out
.5KA^2
((Qin) -(Qout))/(Qin)
1/4wavelength
(1/Do) + (1/Di) = (1/f)

6. units for voltage other than volts
0
((Th) -(Tl))/(Th)
1/((1/C)+(1/C)..........)
Joules/Columb

7. the electric force between two objects of charge Q
L -LCostheta
K |q||Q|/r^2
net work = delta K
E/B

8. formula for centripetal acceleration
elastic collision
(I^2)RT
no heat flow
(V^2)/r

9. the units of current other than amps
d/2
Columbs/second
roeVg
2Pi * sqrt(l/g)

10. change in internal energy during a cyclic process
frequency never changes for light problems
MC(deltaT)
(I^2)RT
0

11. heat required to melt a substance
constant volume
h(Fo)
M(Lf)
sqrt(T/(m/))

12. the units of power other than watts
qV
n(Cv)(deltaT)
.5CV^2 or .5 Q^2/C or .5QV
joules/second

13. resistance of a wire
hc/wavelength
pL/A
(V^2)/r
inelastic collision

14. formula for finding the work function of a metal if the cutoff frequency is known
h/wavelength
h(Fo)
dSintheta=mwavelength
n(Cv)(deltaT)

15. formula equating energy and mass
h/wavelength
e=mc^2
GM*M/(r^2)
BA

16. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
VI
(1/Do) + (1/Di) = (1/f)
joules/second

17. formula for the wavelength (debroglie wavelength) of a moving particle
Joules/Columb
h/mv
KI/r
J= Ft

18. snells law
nSintheta=nsintheta
V = (Vo) + at
V+IR
.5KA^2

19. velocity of waves on a string if tension is known
sqrt(T/(m/))
(I^2)RT
sqrt(3KT/m)
Columbs/second

20. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
delta x = (Vo)t + .5at^2
(Di)/(Do) or (Hi)/(Ho)
(V^2)/R

21. magnification equation
m(v^2)/qvB
(V^2)/r
F/A
(Di)/(Do) or (Hi)/(Ho)

22. electric field in a distance r from a charge
(Wnet)/(Qin)
qE
k|Q|/r^2
sqrt(T/(m/))

23. new wavelength of light as it enters a new substance
Joules/Columb
(3/2)nRdeltaT
.5mV^2 + .5KA^2
(No)(wavelength)=(Nn)(new wavelength)

24. formula for power with current and voltage
Columbs/second
(Patm) + (Pgauge)
V^2=(Vo)^2 +2a*change in x
VI

25. formula for charge stored in a capciator
Q=CV
L -LCostheta
M(Lf)
sqrt(3KT/m)

26. energy of a photon if wavelength is known
M(Lf)
hc/wavelength
rF
(1/Do) + (1/Di) = (1/f)

27. formula for finding magnetic flux
(hc/wavelength)=h(Fo) +(Vs)
qVB
BA
mgCostheta(mu)d

28. formula for change in internal energy in a cosnstat volume PV process
1/((1/C)+(1/C)..........)
nSintheta=nsintheta
(3/2)nRdeltaT
1/4wavelength

29. the force on a charge in an electric field
no heat flow
1/4wavelength
2nt=mwavelength
qE

30. formula for Carnot efficiency
n(Cv)(deltaT)
sqrt(3KT/m)
((Th) -(Tl))/(Th)
h(Fo)

31. velocity of an electrion as it exitws from the hole
qrB/m
VI
.5CV^2 or .5 Q^2/C or .5QV
no heat flow

32. new frequency of light as it enters a new substance
GM*M/(r^2)
d/2
pL/A
frequency never changes for light problems

33. formula for buoyant force
e=mc^2
dSintheta=mwavelength
no temp change
roeVg

34. formula for constructive interference in a diffraction grating
deltaU = deltaQ + deltaW
dSintheta=mwavelength
h/wavelength
no temp change

35. formula for impulse involving momentum
V+IR
(I^2)RT
constant pressure
mV -m(Vo)

36. second kinematic
delta x = (Vo)t + .5at^2
0
E/B
deltaU = deltaQ + deltaW

37. focal length of a mirror with radius d
G M/((d/2)^2)
d/2
.5CV^2 or .5 Q^2/C or .5QV
h/wavelength

38. force of gravity between two objects of mass m
deltaU -deltaW
(V^2)/r
dSintheta=mwavelength
GM*M/(r^2)

39. isothermal
VI
n(Cv)(deltaT)
no temp change
roegh

40. type of collision where K is not conserved
inelastic collision
0
sqrt(T/(m/))
pL/A

41. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
.5CV^2 or .5 Q^2/C or .5QV
FV
KQ/r
(hc/wavelength)=h(Fo) +(Vs)

42. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(Patm) + (Pgauge)
.5mV^2 + .5KA^2
E/B
constant pressure

43. voltage induced in a rod moving through a uniform magnetic field
(I^2)R
no heat flow
VI
BLv

44. formula for power with Voltage and resistance
deltaU = deltaQ + deltaW
(V^2)/R
rF
(hc/wavelength)=h(Fo) +(Vs)

45. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
Ed=V
m(v^2)/qvB
Columbs/second

46. formula relating voltage and electric field
F/A
Ed=V
2Pi * sqrt(l/g)
(I^2)RT

47. formula to find the absoluate pressure at the bottom of a pool
h(Fo)
L -LCostheta
(Patm) + (Pgauge)
qVB

48. force of friction
(hc/wavelength)=h(Fo) +(Vs)
mV -m(Vo)
L -LCostheta
(Fn)(mu)

49. natural frequency of a closed tube of length L
n(Cv)(deltaT)
1/4wavelength
(No)(wavelength)=(Nn)(new wavelength)
opposite motion

50. formula for period of a pendulum
2Pi * sqrt(l/g)
K |q||Q|/r^2
pL/A
h/wavelength