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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. resistance of a wire
roeVg
sqrt(T/(m/))
pL/A
opposite motion

2. new wavelength of light as it enters a new substance
elastic collision
sqrt(3KT/m)
dSintheta=mwavelength
(No)(wavelength)=(Nn)(new wavelength)

3. formula for power with Voltage and resistance
F/A
(V^2)/R
no temp change
(Wnet)/(Qin)

4. formula for constructive interference in a thin membrane with two phase changes
deltaU -deltaW
AV=(A2)(V2)
2nt=mwavelength
e=mc^2

5. electric field in a distance r from a charge
k|Q|/r^2
d/2
1/4wavelength
sqrt(T/(m/))

6. formula for efficiency not using work out
((Th) -(Tl))/(Th)
joules/second
((Qin) -(Qout))/(Qin)
G M/((d/2)^2)

7. formula for finding the momentum of a photon
qVB
no force (right hand rule)
h/wavelength
net work = delta K

8. isobaric
d/2
constant pressure
sqrt(T/(m/))
joules/second

9. heat required to melt a substance
1/2wavelength
(No)(wavelength)=(Nn)(new wavelength)
V^2=(Vo)^2 +2a*change in x
M(Lf)

10. second kinematic
k|Q|/r^2
h(Fo)
delta x = (Vo)t + .5at^2
m(v^2)/qvB

11. formula for impulse involving momentum
mV -m(Vo)
MC(deltaT)
1/4wavelength
Joules/Columb

12. change in internal energy during a cyclic process
qV
(V^2)/R
0
2nt=mwavelength

13. formula for finding the magnetic field a distance r from a current carrying wire
(Di)/(Do) or (Hi)/(Ho)
KQ/r
KI/r
qE

14. heat during a cyclic process (net heat)
mgCostheta(mu)d
sqrt(3KT/m)
deltaU -deltaW
h/wavelength

15. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
(Fn)(mu)
m(v^2)/qvB
pL/A

16. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
nSintheta=nsintheta
net work = delta K
sqrt(T/(m/))
(EMF)Rt/10

17. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
BA
roeVg
E/B
(Wnet)/(Qin)

18. formula for period of a pendulum
2Pi * sqrt(l/g)
constant volume
0
qV

19. formula equating energy and mass
n(Cv)(deltaT)
V = (Vo) + at
e=mc^2
delta x = (Vo)t + .5at^2

20. formula for buoyant force
V = (Vo) + at
perfectly inelastic collision
Ed=V
roeVg

21. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
K |q||Q|/r^2
AV=(A2)(V2)
(hc/wavelength)=h(Fo) +(Vs)
perfectly inelastic collision

22. formula for charge stored in a capciator
qrB/m
Q=CV
qVB
roegh

23. the units of power other than watts
G M/((d/2)^2)
Q=CV
qE
joules/second

24. heat required to change temperature of a substance
sqrt(T/(m/))
roeVg
.5KA^2
MC(deltaT)

25. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
Columbs/second
AV=(A2)(V2)
constant volume

26. velocity of waves on a string if tension is known
sqrt(T/(m/))
-KA
(V^2)/r
KQ/r

27. type of collision where K is conserved
MC(deltaT)
n(Cv)(deltaT)
elastic collision
.5KA^2

28. natural frequency of a closed tube of length L
2nt=mwavelength
-KA
1/4wavelength
Columbs/second

29. new frequency of light as it enters a new substance
.5mV^2 + .5KA^2
frequency never changes for light problems
Ed=V
nSintheta=nsintheta

30. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
h(Fo)
((Qin) -(Qout))/(Qin)
BLv

31. first kinematic
sqrt(3KT/m)
inelastic collision
V = (Vo) + at
frequency never changes for light problems

32. isothermal
(Fn)(mu)
G M/((d/2)^2)
0
no temp change

33. velocity of a molecule of gas
(I^2)R
(V^2)/r
sqrt(3KT/m)
nSintheta=nsintheta

34. what direction is friction?
sqrt(T/(m/))
roeVg
opposite motion
.5mV^2 + .5KA^2

35. hooke's law force of a spring
net work = delta K
2Pi * sqrt(l/g)
-KA
(I^2)R

36. isometric
constant volume
net work = delta K
frequency never changes for light problems
GM*M/(r^2)

37. snells law
1/2wavelength
nSintheta=nsintheta
(No)(wavelength)=(Nn)(new wavelength)
((Qin) -(Qout))/(Qin)

38. EMF of a battery having internal resistance R
(No)(wavelength)=(Nn)(new wavelength)
V+IR
(I^2)R
G M/((d/2)^2)

39. formula for Carnot efficiency
(I^2)RT
((Th) -(Tl))/(Th)
.5KA^2
(V^2)/r

40. type of collision where K is not conserved
perfectly inelastic collision
inelastic collision
1/4wavelength
roeVg

41. formula for finding magnetic flux
1/2wavelength
(I^2)RT
(V^2)/r
BA

42. the electric force between two objects of charge Q
VI
Joules/Columb
L -LCostheta
K |q||Q|/r^2

43. formula relating voltage and electric field
no force (right hand rule)
Columbs/second
n(Cv)(deltaT)
Ed=V

44. formula for centripetal acceleration
J= Ft
(V^2)/r
h/wavelength
E/B

45. velocity of an electrion as it exitws from the hole
no force (right hand rule)
e=mc^2
d/2
qrB/m

46. 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
1/((1/C)+(1/C)..........)
F/A
2nt=mwavelength

47. formula for constructive interference in a diffraction grating
qV
d/2
dSintheta=mwavelength
VI

48. formula to find the gauge pressure at the bottom of a pool
roegh
sqrt(T/(m/))
K |q||Q|/r^2
k|Q|/r^2

49. third kinematic
V^2=(Vo)^2 +2a*change in x
VI
GM*M/(r^2)
K |q||Q|/r^2

50. force of friction
2nt=mwavelength
(Fn)(mu)
(hc/wavelength)=h(Fo) +(Vs)
(N2)/(N1)