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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. units for voltage other than volts
h/wavelength
pL/A
Joules/Columb
F/A

2. type of collision where K is conserved
no temp change
elastic collision
V^2=(Vo)^2 +2a*change in x
qVB

3. velocity of an electrion as it exitws from the hole
nSintheta=nsintheta
hc/wavelength
qrB/m
pL/A

4. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
.5mV^2 + .5KA^2
-KA
AV=(A2)(V2)

5. formula for centripetal acceleration
no temp change
no heat flow
KI/r
(V^2)/r

6. new wavelength of light as it enters a new substance
k|Q|/r^2
BLv
(No)(wavelength)=(Nn)(new wavelength)
d/2

7. resistance of a wire
Q=CV
MC(deltaT)
pL/A
1/4wavelength

8. electric field in a distance r from a charge
k|Q|/r^2
deltaU -deltaW
E/B
KQ/r

9. force a charge in a Bfield
(V^2)/R
qVB
perfectly inelastic collision
(No)(wavelength)=(Nn)(new wavelength)

10. formula for power with Voltage and resistance
Columbs/second
(V^2)/R
KI/r
.5KA^2

11. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
(Fn)(mu)
.5mV^2 + .5KA^2
inelastic collision
(N2)/(N1)

12. radius of curvature of a charged particle as it enters a uniform magnetic field
(EMF)Rt/10
sqrt(T/(m/))
m(v^2)/qvB
h(Fo)

13. natural frequency of a closed tube of length L
VI
hc/wavelength
J= Ft
1/4wavelength

14. formula for finding the momentum of a photon
h/wavelength
F/A
BA
-KA

15. formula for efficiency of a heat engine using work out
K |q||Q|/r^2
(Wnet)/(Qin)
h(Fo)
constant volume

16. formula for buoyant force
-KA
joules/second
roeVg
deltaU = deltaQ + deltaW

17. third kinematic
1/2wavelength
V^2=(Vo)^2 +2a*change in x
KQ/r
F/A

18. 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
(V^2)/r
-KA
joules/second

19. isobaric
(No)(wavelength)=(Nn)(new wavelength)
no temp change
(V^2)/R
constant pressure

20. pressure
elastic collision
KQ/r
F/A
.5CV^2 or .5 Q^2/C or .5QV

21. magnification equation
no heat flow
deltaU -deltaW
(Di)/(Do) or (Hi)/(Ho)
elastic collision

22. formula for power with current and resistance
qV
2Pi * sqrt(l/g)
(I^2)R
(hc/wavelength)=h(Fo) +(Vs)

23. EMF of a battery having internal resistance R
V+IR
elastic collision
(Patm) + (Pgauge)
.5KA^2

24. force of friction
(Fn)(mu)
KQ/r
(Wnet)/(Qin)
KI/r

25. equation for the first law of thermodynamics
(Patm) + (Pgauge)
(Di)/(Do) or (Hi)/(Ho)
deltaU = deltaQ + deltaW
2nt=mwavelength

26. isometric
G M/((d/2)^2)
1/((1/C)+(1/C)..........)
2Pi * sqrt(l/g)
constant volume

27. electric potential a distance r from a charge
(I^2)RT
V^2=(Vo)^2 +2a*change in x
KQ/r
mV -m(Vo)

28. formula for change in internal energy in a cosnstat volume PV process
(V^2)/R
no force (right hand rule)
.5mV^2 + .5KA^2
(3/2)nRdeltaT

29. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
1/((1/C)+(1/C)..........)
E/B
BA
K |q||Q|/r^2

30. formula for finding the magnetic field a distance r from a current carrying wire
roeVg
KI/r
G M/((d/2)^2)
(N2)/(N1)

31. formula for charge stored in a capciator
BA
Q=CV
(I^2)R
delta x = (Vo)t + .5at^2

32. voltage induced in a rod moving through a uniform magnetic field
BLv
roegh
MC(deltaT)
(V^2)/r

33. isothermal
perfectly inelastic collision
sqrt(3KT/m)
2Pi * sqrt(l/g)
no temp change

34. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
2Pi * sqrt(l/g)
nSintheta=nsintheta
AV=(A2)(V2)

35. total capacitance of capacitors in series
(I^2)R
1/((1/C)+(1/C)..........)
opposite motion
(I^2)RT

36. equation of continuity
perfectly inelastic collision
(V^2)/r
AV=(A2)(V2)
(hc/wavelength)=h(Fo) +(Vs)

37. the units of current other than amps
frequency never changes for light problems
Columbs/second
MC(deltaT)
no temp change

38. energy of a photon if wavelength is known
elastic collision
J= Ft
constant pressure
hc/wavelength

39. formula for critical angle
qrB/m
1/2wavelength
(N2)/(N1)
GM*M/(r^2)

40. formula for height of the block (at the start of a pendulum string) in terms of theta and L
no force (right hand rule)
m(v^2)/qvB
M(Lf)
L -LCostheta

41. the force on a charge in an electric field
-KA
qE
AV=(A2)(V2)
h(Fo)

42. formula for impluse involving time
GM*M/(r^2)
AV=(A2)(V2)
.5KA^2
J= Ft

43. natural frequency of an open tube of length L
qE
(Fn)(mu)
1/2wavelength
KQ/r

44. formula to find the gauge pressure at the bottom of a pool
((Qin) -(Qout))/(Qin)
roegh
(Fn)(mu)
qrB/m

45. adibatic
mgCostheta(mu)d
(V^2)/r
no heat flow
(I^2)R

46. velocity of waves on a string if tension is known
sqrt(T/(m/))
MC(deltaT)
constant pressure
h/mv

47. focal length of a mirror with radius d
d/2
nSintheta=nsintheta
E/B
(hc/wavelength)=h(Fo) +(Vs)

48. formula for constructive interference in a thin membrane with two phase changes
KQ/r
F/A
(Fn)(mu)
2nt=mwavelength

49. type of collision where K is not conserved
inelastic collision
((Qin) -(Qout))/(Qin)
(1/Do) + (1/Di) = (1/f)
(Fn)(mu)

50. change in internal energy during a cyclic process
qV
0
hc/wavelength
J= Ft