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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. the units of power other than watts
joules/second
mV -m(Vo)
perfectly inelastic collision
no heat flow

2. resistance of a wire
n(Cv)(deltaT)
1/2wavelength
pL/A
opposite motion

3. radius of curvature of a charged particle as it enters a uniform magnetic field
AV=(A2)(V2)
1/2wavelength
M(Lf)
m(v^2)/qvB

4. formula for impluse involving time
J= Ft
KQ/r
Q=CV
constant pressure

5. electric field in a distance r from a charge
mV -m(Vo)
(No)(wavelength)=(Nn)(new wavelength)
V = (Vo) + at
k|Q|/r^2

6. equation of continuity
K |q||Q|/r^2
AV=(A2)(V2)
L -LCostheta
F/A

7. type of collision where K is not conserved
deltaU -deltaW
(I^2)R
-KA
inelastic collision

8. change in internal energy during a cyclic process
Columbs/second
0
V = (Vo) + at
mgCostheta(mu)d

9. natural frequency of a closed tube of length L
1/4wavelength
no temp change
deltaU -deltaW
roegh

10. formula for buoyant force
roeVg
no temp change
GM*M/(r^2)
constant pressure

11. formula for period of a pendulum
.5CV^2 or .5 Q^2/C or .5QV
joules/second
2Pi * sqrt(l/g)
(3/2)nRdeltaT

12. velocity of a molecule of gas
sqrt(3KT/m)
.5CV^2 or .5 Q^2/C or .5QV
constant volume
(3/2)nRdeltaT

13. the electric force between two objects of charge Q
BLv
qrB/m
BA
K |q||Q|/r^2

14. forgotten power equation
FV
e=mc^2
deltaU -deltaW
no force (right hand rule)

15. EMF of a battery having internal resistance R
V+IR
2Pi * sqrt(l/g)
(3/2)nRdeltaT
VI

16. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
qVB
hc/wavelength
Joules/Columb
E/B

17. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(1/Do) + (1/Di) = (1/f)
.5KA^2
qV
no heat flow

18. formula relating voltage and electric field
GM*M/(r^2)
(1/Do) + (1/Di) = (1/f)
(N2)/(N1)
Ed=V

19. third kinematic
V = (Vo) + at
Ed=V
F/A
V^2=(Vo)^2 +2a*change in x

20. velocity of an electrion as it exitws from the hole
(Di)/(Do) or (Hi)/(Ho)
0
qrB/m
sqrt(T/(m/))

21. formula for finding the momentum of a photon
MC(deltaT)
((Qin) -(Qout))/(Qin)
h/wavelength
G M/((d/2)^2)

22. formula for constructive interference in a diffraction grating
sqrt(T/(m/))
opposite motion
(Patm) + (Pgauge)
dSintheta=mwavelength

23. force of frction on an incline
mgCostheta(mu)d
(Di)/(Do) or (Hi)/(Ho)
no force (right hand rule)
(Wnet)/(Qin)

24. isothermal
no temp change
(3/2)nRdeltaT
joules/second
V+IR

25. formula for centripetal acceleration
-KA
BLv
(V^2)/r
(Patm) + (Pgauge)

26. energy of a photon if wavelength is known
mV -m(Vo)
(Wnet)/(Qin)
BLv
hc/wavelength

27. equation for the first law of thermodynamics
hc/wavelength
deltaU = deltaQ + deltaW
(Fn)(mu)
2nt=mwavelength

28. formula to find the gauge pressure at the bottom of a pool
net work = delta K
((Th) -(Tl))/(Th)
roegh
K |q||Q|/r^2

29. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
((Th) -(Tl))/(Th)
no heat flow
E/B

30. type of collision where objects stick togerther
sqrt(T/(m/))
perfectly inelastic collision
((Th) -(Tl))/(Th)
K |q||Q|/r^2

31. formula for finding the work function of a metal if the cutoff frequency is known
roegh
h(Fo)
no temp change
mV -m(Vo)

32. formula for finding magnetic flux
m(v^2)/qvB
Ed=V
(Patm) + (Pgauge)
BA

33. heat required to melt a substance
.5KA^2
M(Lf)
h(Fo)
V+IR

34. force of friction
(Fn)(mu)
(I^2)R
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)

35. type of collision where K is conserved
no force (right hand rule)
L -LCostheta
elastic collision
no temp change

36. formula for finding the magnetic field a distance r from a current carrying wire
1/2wavelength
VI
KI/r
(1/Do) + (1/Di) = (1/f)

37. force of gravity between two objects of mass m
perfectly inelastic collision
GM*M/(r^2)
(Wnet)/(Qin)
inelastic collision

38. electric potential a distance r from a charge
M(Lf)
KQ/r
BA
((Qin) -(Qout))/(Qin)

39. the units of current other than amps
.5KA^2
no temp change
Columbs/second
constant volume

40. units for voltage other than volts
sqrt(T/(m/))
pL/A
Joules/Columb
Ed=V

41. velocity of waves on a string if tension is known
AV=(A2)(V2)
sqrt(T/(m/))
.5KA^2
1/4wavelength

42. formula for height of the block (at the start of a pendulum string) in terms of theta and L
(Di)/(Do) or (Hi)/(Ho)
L -LCostheta
elastic collision
(EMF)Rt/10

43. adibatic
no heat flow
1/((1/C)+(1/C)..........)
rF
.5CV^2 or .5 Q^2/C or .5QV

44. lens/mirror equation
(No)(wavelength)=(Nn)(new wavelength)
(1/Do) + (1/Di) = (1/f)
qE
0

45. isometric
Ed=V
mV -m(Vo)
constant volume
1/((1/C)+(1/C)..........)

46. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
elastic collision
((Qin) -(Qout))/(Qin)
(EMF)Rt/10
net work = delta K

47. natural frequency of an open tube of length L
FV
delta x = (Vo)t + .5at^2
1/2wavelength
G M/((d/2)^2)

48. heat required to change temperature of a substance
Joules/Columb
(V^2)/r
m(v^2)/qvB
MC(deltaT)

49. formula for efficiency not using work out
(Patm) + (Pgauge)
mV -m(Vo)
((Qin) -(Qout))/(Qin)
e=mc^2

50. pressure
K |q||Q|/r^2
qV
F/A
(Di)/(Do) or (Hi)/(Ho)