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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 constructive interference in a diffraction grating
GM*M/(r^2)
e=mc^2
dSintheta=mwavelength
h/wavelength

2. formula for energy of a spring mass when spring is at maximum displacement
roegh
.5KA^2
(No)(wavelength)=(Nn)(new wavelength)
(Di)/(Do) or (Hi)/(Ho)

3. heat required to melt a substance
V = (Vo) + at
M(Lf)
constant pressure
BLv

4. focal length of a mirror with radius d
.5CV^2 or .5 Q^2/C or .5QV
(Patm) + (Pgauge)
(Di)/(Do) or (Hi)/(Ho)
d/2

5. natural frequency of a closed tube of length L
(EMF)Rt/10
M(Lf)
1/4wavelength
MC(deltaT)

6. formula for centripetal acceleration
(V^2)/r
.5KA^2
k|Q|/r^2
mV -m(Vo)

7. energy of a photon if wavelength is known
qrB/m
inelastic collision
KQ/r
hc/wavelength

8. electric potential a distance r from a charge
KQ/r
dSintheta=mwavelength
V+IR
rF

9. electric field in a distance r from a charge
(Wnet)/(Qin)
(Di)/(Do) or (Hi)/(Ho)
rF
k|Q|/r^2

10. total capacitance of capacitors in series
(I^2)RT
K |q||Q|/r^2
1/((1/C)+(1/C)..........)
FV

11. first kinematic
(I^2)RT
L -LCostheta
V = (Vo) + at
Columbs/second

12. formula for efficiency not using work out
(Di)/(Do) or (Hi)/(Ho)
((Qin) -(Qout))/(Qin)
sqrt(3KT/m)
perfectly inelastic collision

13. velocity of a molecule of gas
(Fn)(mu)
n(Cv)(deltaT)
sqrt(3KT/m)
BLv

14. heat during an isometric process
1/((1/C)+(1/C)..........)
n(Cv)(deltaT)
(No)(wavelength)=(Nn)(new wavelength)
FV

15. lens/mirror equation
(Patm) + (Pgauge)
(1/Do) + (1/Di) = (1/f)
G M/((d/2)^2)
FV

16. hooke's law force of a spring
BA
GM*M/(r^2)
-KA
V = (Vo) + at

17. change in internal energy during a cyclic process
(3/2)nRdeltaT
K |q||Q|/r^2
0
(1/Do) + (1/Di) = (1/f)

18. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
-KA
2Pi * sqrt(l/g)
opposite motion

19. what direction is friction?
L -LCostheta
AV=(A2)(V2)
opposite motion
.5KA^2

20. third kinematic
VI
E/B
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))

21. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
delta x = (Vo)t + .5at^2
2Pi * sqrt(l/g)
F/A

22. formula for impulse involving momentum
constant pressure
mV -m(Vo)
MC(deltaT)
sqrt(3KT/m)

23. isometric
1/2wavelength
constant volume
2Pi * sqrt(l/g)
BLv

24. force of friction
(3/2)nRdeltaT
(Patm) + (Pgauge)
(Fn)(mu)
roeVg

25. the units of current other than amps
Ed=V
Columbs/second
roeVg
1/((1/C)+(1/C)..........)

26. formula for period of a pendulum
2Pi * sqrt(l/g)
(1/Do) + (1/Di) = (1/f)
K |q||Q|/r^2
(V^2)/R

27. formula for change in internal energy in a cosnstat volume PV process
rF
(3/2)nRdeltaT
Q=CV
(V^2)/r

28. isothermal
rF
joules/second
deltaU = deltaQ + deltaW
no temp change

29. type of collision where K is not conserved
(V^2)/R
nSintheta=nsintheta
inelastic collision
FV

30. force a charge in a Bfield
-KA
mgCostheta(mu)d
1/4wavelength
qVB

31. equation for the first law of thermodynamics
delta x = (Vo)t + .5at^2
2Pi * sqrt(l/g)
deltaU = deltaQ + deltaW
roeVg

32. velocity of waves on a string if tension is known
1/4wavelength
k|Q|/r^2
.5KA^2
sqrt(T/(m/))

33. heat required to change temperature of a substance
Q=CV
FV
M(Lf)
MC(deltaT)

34. snells law
no temp change
inelastic collision
nSintheta=nsintheta
GM*M/(r^2)

35. isobaric
.5mV^2 + .5KA^2
constant pressure
joules/second
nSintheta=nsintheta

36. pressure
F/A
(V^2)/r
0
no heat flow

37. formula for finding the work function of a metal if the cutoff frequency is known
BA
net work = delta K
h(Fo)
qVB

38. formula equating energy and mass
e=mc^2
Columbs/second
roeVg
delta x = (Vo)t + .5at^2

39. formula for critical angle
opposite motion
net work = delta K
(N2)/(N1)
.5CV^2 or .5 Q^2/C or .5QV

40. formula relating voltage and electric field
Ed=V
.5KA^2
e=mc^2
1/2wavelength

41. work energy theorum
net work = delta K
n(Cv)(deltaT)
.5mV^2 + .5KA^2
mV -m(Vo)

42. energy stored in a capacitor
no temp change
K |q||Q|/r^2
.5CV^2 or .5 Q^2/C or .5QV
net work = delta K

43. type of collision where K is conserved
(Patm) + (Pgauge)
elastic collision
frequency never changes for light problems
h(Fo)

44. new frequency of light as it enters a new substance
frequency never changes for light problems
dSintheta=mwavelength
((Th) -(Tl))/(Th)
perfectly inelastic collision

45. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
1/2wavelength
FV
E/B
(No)(wavelength)=(Nn)(new wavelength)

46. natural frequency of an open tube of length L
no heat flow
qrB/m
1/2wavelength
roegh

47. voltage induced in a rod moving through a uniform magnetic field
qrB/m
roeVg
BLv
FV

48. formula for torque
Ed=V
rF
opposite motion
constant volume

49. formula for efficiency of a heat engine using work out
no heat flow
(hc/wavelength)=h(Fo) +(Vs)
(Wnet)/(Qin)
1/2wavelength

50. heat during a cyclic process (net heat)
h/wavelength
opposite motion
1/2wavelength
deltaU -deltaW