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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 force on a charge in an electric field
perfectly inelastic collision
qE
0
F/A

2. formula to find the gauge pressure at the bottom of a pool
roegh
m(v^2)/qvB
(Fn)(mu)
(1/Do) + (1/Di) = (1/f)

3. formula for power with current and resistance
no temp change
E/B
h/wavelength
(I^2)R

4. what direction is friction?
AV=(A2)(V2)
opposite motion
inelastic collision
h(Fo)

5. formula for torque
(N2)/(N1)
GM*M/(r^2)
elastic collision
rF

6. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
FV
hc/wavelength
frequency never changes for light problems
(I^2)RT

7. heat during an isometric process
(hc/wavelength)=h(Fo) +(Vs)
hc/wavelength
n(Cv)(deltaT)
.5KA^2

8. formula for finding the momentum of a photon
(Di)/(Do) or (Hi)/(Ho)
nSintheta=nsintheta
h/wavelength
h/mv

9. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
roeVg
joules/second
constant pressure

10. second kinematic
rF
mgCostheta(mu)d
delta x = (Vo)t + .5at^2
.5KA^2

11. formula for power with Voltage and resistance
AV=(A2)(V2)
pL/A
inelastic collision
(V^2)/R

12. formula for efficiency not using work out
m(v^2)/qvB
qE
((Qin) -(Qout))/(Qin)
(No)(wavelength)=(Nn)(new wavelength)

13. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
Q=CV
no force (right hand rule)
.5mV^2 + .5KA^2
BA

14. formula relating voltage and electric field
2Pi * sqrt(l/g)
Ed=V
deltaU = deltaQ + deltaW
d/2

15. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(N2)/(N1)
n(Cv)(deltaT)
G M/((d/2)^2)
frequency never changes for light problems

16. forgotten power equation
deltaU -deltaW
1/2wavelength
.5CV^2 or .5 Q^2/C or .5QV
FV

17. formula for charge stored in a capciator
Columbs/second
hc/wavelength
Q=CV
frequency never changes for light problems

18. the electric force between two objects of charge Q
constant volume
mV -m(Vo)
K |q||Q|/r^2
d/2

19. formula for critical angle
K |q||Q|/r^2
(Wnet)/(Qin)
(N2)/(N1)
.5CV^2 or .5 Q^2/C or .5QV

20. the force on a charge moving parallel to a magnetic field
inelastic collision
no force (right hand rule)
1/2wavelength
qV

21. natural frequency of a closed tube of length L
G M/((d/2)^2)
rF
1/4wavelength
mgCostheta(mu)d

22. resistance of a wire
inelastic collision
dSintheta=mwavelength
pL/A
(Fn)(mu)

23. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
1/4wavelength
m(v^2)/qvB
.5CV^2 or .5 Q^2/C or .5QV

24. equation of continuity
h/wavelength
AV=(A2)(V2)
(Patm) + (Pgauge)
KI/r

25. the units of power other than watts
roegh
FV
e=mc^2
joules/second

26. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
dSintheta=mwavelength
d/2
(N2)/(N1)

27. isothermal
Columbs/second
no temp change
e=mc^2
(V^2)/r

28. focal length of a mirror with radius d
sqrt(3KT/m)
d/2
(V^2)/r
KQ/r

29. snells law
M(Lf)
nSintheta=nsintheta
GM*M/(r^2)
(Di)/(Do) or (Hi)/(Ho)

30. velocity of waves on a string if tension is known
sqrt(T/(m/))
perfectly inelastic collision
qE
k|Q|/r^2

31. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
VI
((Qin) -(Qout))/(Qin)
m(v^2)/qvB

32. adibatic
KI/r
(Di)/(Do) or (Hi)/(Ho)
no heat flow
(3/2)nRdeltaT

33. heat during a cyclic process (net heat)
deltaU -deltaW
AV=(A2)(V2)
sqrt(T/(m/))
MC(deltaT)

34. total capacitance of capacitors in series
1/4wavelength
1/((1/C)+(1/C)..........)
constant volume
MC(deltaT)

35. work energy theorum
qVB
((Th) -(Tl))/(Th)
elastic collision
net work = delta K

36. formula for energy of a spring mass when spring is at maximum displacement
e=mc^2
(N2)/(N1)
.5KA^2
qrB/m

37. force of frction on an incline
mgCostheta(mu)d
inelastic collision
.5KA^2
V^2=(Vo)^2 +2a*change in x

38. first kinematic
sqrt(T/(m/))
no heat flow
V = (Vo) + at
V^2=(Vo)^2 +2a*change in x

39. formula for the wavelength (debroglie wavelength) of a moving particle
roegh
h/mv
.5KA^2
.5mV^2 + .5KA^2

40. formula for efficiency of a heat engine using work out
(No)(wavelength)=(Nn)(new wavelength)
KI/r
(N2)/(N1)
(Wnet)/(Qin)

41. energy stored in a capacitor
.5mV^2 + .5KA^2
(Di)/(Do) or (Hi)/(Ho)
.5CV^2 or .5 Q^2/C or .5QV
constant volume

42. heat required to change temperature of a substance
E/B
mgCostheta(mu)d
MC(deltaT)
M(Lf)

43. formula for centripetal acceleration
qV
m(v^2)/qvB
(V^2)/r
(N2)/(N1)

44. formula to find the absoluate pressure at the bottom of a pool
mgCostheta(mu)d
mV -m(Vo)
rF
(Patm) + (Pgauge)

45. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
1/2wavelength
(I^2)R
(V^2)/r

46. formula for Carnot efficiency
KI/r
m(v^2)/qvB
((Th) -(Tl))/(Th)
G M/((d/2)^2)

47. formula equating energy and mass
(Wnet)/(Qin)
e=mc^2
Columbs/second
h(Fo)

48. formula for finding magnetic flux
M(Lf)
((Th) -(Tl))/(Th)
BA
sqrt(T/(m/))

49. units for voltage other than volts
qE
Joules/Columb
deltaU = deltaQ + deltaW
n(Cv)(deltaT)

50. change in internal energy during a cyclic process
inelastic collision
VI
0
constant pressure