Test your basic knowledge |

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. what direction is friction?
constant pressure
opposite motion
delta x = (Vo)t + .5at^2
(V^2)/R

2. voltage induced in a rod moving through a uniform magnetic field
F/A
(V^2)/R
BLv
(Di)/(Do) or (Hi)/(Ho)

3. formula for energy of a spring mass when spring is at maximum displacement
roegh
sqrt(3KT/m)
.5KA^2
(No)(wavelength)=(Nn)(new wavelength)

4. the units of power other than watts
e=mc^2
((Th) -(Tl))/(Th)
joules/second
1/4wavelength

5. change in internal energy during a cyclic process
mV -m(Vo)
0
Q=CV
GM*M/(r^2)

6. magnification equation
elastic collision
n(Cv)(deltaT)
dSintheta=mwavelength
(Di)/(Do) or (Hi)/(Ho)

7. formula for period of a pendulum
2Pi * sqrt(l/g)
(Wnet)/(Qin)
AV=(A2)(V2)
((Th) -(Tl))/(Th)

8. heat during a cyclic process (net heat)
(EMF)Rt/10
deltaU -deltaW
no temp change
M(Lf)

9. isometric
Ed=V
constant volume
0
h/mv

10. work energy theorum
((Qin) -(Qout))/(Qin)
d/2
1/((1/C)+(1/C)..........)
net work = delta K

11. velocity of an electrion as it exitws from the hole
hc/wavelength
Ed=V
AV=(A2)(V2)
qrB/m

12. third kinematic
V^2=(Vo)^2 +2a*change in x
GM*M/(r^2)
dSintheta=mwavelength
h/wavelength

13. natural frequency of an open tube of length L
1/2wavelength
net work = delta K
.5CV^2 or .5 Q^2/C or .5QV
J= Ft

14. natural frequency of a closed tube of length L
n(Cv)(deltaT)
(Wnet)/(Qin)
1/4wavelength
sqrt(T/(m/))

15. the force on a charge in an electric field
KQ/r
(I^2)RT
deltaU = deltaQ + deltaW
qE

16. hooke's law force of a spring
-KA
1/4wavelength
(3/2)nRdeltaT
MC(deltaT)

17. formula for finding the momentum of a photon
h/wavelength
GM*M/(r^2)
V+IR
.5CV^2 or .5 Q^2/C or .5QV

18. formula for buoyant force
(I^2)RT
(No)(wavelength)=(Nn)(new wavelength)
roeVg
no temp change

19. isobaric
J= Ft
1/((1/C)+(1/C)..........)
constant pressure
qrB/m

20. force a charge in a Bfield
qVB
qrB/m
hc/wavelength
-KA

21. formula for constructive interference in a thin membrane with two phase changes
(I^2)R
(No)(wavelength)=(Nn)(new wavelength)
2nt=mwavelength
roegh

22. units for voltage other than volts
GM*M/(r^2)
Joules/Columb
(V^2)/r
mgCostheta(mu)d

23. adibatic
no heat flow
(Wnet)/(Qin)
Q=CV
BLv

24. type of collision where K is not conserved
perfectly inelastic collision
KI/r
inelastic collision
nSintheta=nsintheta

25. formula equating energy and mass
e=mc^2
AV=(A2)(V2)
MC(deltaT)
qE

26. new wavelength of light as it enters a new substance
V = (Vo) + at
(No)(wavelength)=(Nn)(new wavelength)
(Di)/(Do) or (Hi)/(Ho)
Q=CV

27. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
inelastic collision
qV
KQ/r
MC(deltaT)

28. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
BA
n(Cv)(deltaT)
KI/r

29. formula for power with Voltage and resistance
2Pi * sqrt(l/g)
constant pressure
(1/Do) + (1/Di) = (1/f)
(V^2)/R

30. new frequency of light as it enters a new substance
h/wavelength
e=mc^2
frequency never changes for light problems
(I^2)RT

31. resistance of a wire
deltaU = deltaQ + deltaW
Joules/Columb
pL/A
(N2)/(N1)

32. isothermal
no force (right hand rule)
no temp change
sqrt(3KT/m)
KQ/r

33. formula for Carnot efficiency
((Th) -(Tl))/(Th)
(Wnet)/(Qin)
joules/second
AV=(A2)(V2)

34. formula for finding magnetic flux
((Th) -(Tl))/(Th)
MC(deltaT)
BA
(No)(wavelength)=(Nn)(new wavelength)

35. formula for centripetal acceleration
Joules/Columb
(Di)/(Do) or (Hi)/(Ho)
(V^2)/r
constant volume

36. formula for power with current and resistance
deltaU -deltaW
(I^2)R
.5KA^2
h/wavelength

37. formula for torque
rF
h/mv
deltaU = deltaQ + deltaW
k|Q|/r^2

38. electric potential a distance r from a charge
KQ/r
E/B
sqrt(T/(m/))
Joules/Columb

39. focal length of a mirror with radius d
d/2
L -LCostheta
2nt=mwavelength
(Patm) + (Pgauge)

40. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
V+IR
no temp change
dSintheta=mwavelength

41. heat required to change temperature of a substance
h(Fo)
MC(deltaT)
roeVg
1/((1/C)+(1/C)..........)

42. energy of a photon if wavelength is known
m(v^2)/qvB
deltaU -deltaW
hc/wavelength
sqrt(T/(m/))

43. formula to find the gauge pressure at the bottom of a pool
roegh
(N2)/(N1)
(Fn)(mu)
(Patm) + (Pgauge)

44. lens/mirror equation
(V^2)/R
(1/Do) + (1/Di) = (1/f)
h/wavelength
((Qin) -(Qout))/(Qin)

45. EMF of a battery having internal resistance R
(Fn)(mu)
V+IR
E/B
2Pi * sqrt(l/g)

46. first kinematic
k|Q|/r^2
V = (Vo) + at
M(Lf)
sqrt(T/(m/))

47. formula for efficiency of a heat engine using work out
.5KA^2
qVB
d/2
(Wnet)/(Qin)

48. the force on a charge moving parallel to a magnetic field
2Pi * sqrt(l/g)
h(Fo)
KQ/r
no force (right hand rule)

49. formula for finding the magnetic field a distance r from a current carrying wire
(EMF)Rt/10
(No)(wavelength)=(Nn)(new wavelength)
KI/r
h(Fo)

50. heat during an isometric process
n(Cv)(deltaT)
inelastic collision
(I^2)R
V+IR