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. total capacitance of capacitors in series
no heat flow
rF
1/((1/C)+(1/C)..........)
qrB/m

2. equation for the first law of thermodynamics
m(v^2)/qvB
h/wavelength
deltaU = deltaQ + deltaW
VI

3. formula for constructive interference in a thin membrane with two phase changes
k|Q|/r^2
qVB
F/A
2nt=mwavelength

4. formula for period of a pendulum
sqrt(T/(m/))
2Pi * sqrt(l/g)
opposite motion
roegh

5. formula equating energy and mass
.5mV^2 + .5KA^2
(Di)/(Do) or (Hi)/(Ho)
dSintheta=mwavelength
e=mc^2

6. pressure
(Patm) + (Pgauge)
h/wavelength
F/A
GM*M/(r^2)

7. formula for finding the momentum of a photon
.5mV^2 + .5KA^2
h/wavelength
m(v^2)/qvB
L -LCostheta

8. formula for power with current and voltage
AV=(A2)(V2)
1/((1/C)+(1/C)..........)
L -LCostheta
VI

9. electric field in a distance r from a charge
n(Cv)(deltaT)
k|Q|/r^2
BLv
Ed=V

10. formula for Carnot efficiency
opposite motion
.5mV^2 + .5KA^2
sqrt(T/(m/))
((Th) -(Tl))/(Th)

11. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
elastic collision
Ed=V
net work = delta K
qV

12. resistance of a wire
.5mV^2 + .5KA^2
(V^2)/r
pL/A
h(Fo)

13. adibatic
perfectly inelastic collision
qVB
J= Ft
no heat flow

14. the force on a charge in an electric field
qE
qrB/m
AV=(A2)(V2)
pL/A

15. velocity of a molecule of gas
(Fn)(mu)
sqrt(3KT/m)
G M/((d/2)^2)
VI

16. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
G M/((d/2)^2)
V^2=(Vo)^2 +2a*change in x
(V^2)/R

17. formula for impulse involving momentum
rF
mV -m(Vo)
h/mv
qrB/m

18. isobaric
1/((1/C)+(1/C)..........)
BA
constant pressure
(Patm) + (Pgauge)

19. new frequency of light as it enters a new substance
V = (Vo) + at
frequency never changes for light problems
(I^2)RT
(Patm) + (Pgauge)

20. heat required to melt a substance
M(Lf)
hc/wavelength
n(Cv)(deltaT)
1/((1/C)+(1/C)..........)

21. formula for energy of a spring mass when spring is at maximum displacement
roegh
m(v^2)/qvB
.5KA^2
qE

22. magnification equation
(Wnet)/(Qin)
joules/second
(Di)/(Do) or (Hi)/(Ho)
V^2=(Vo)^2 +2a*change in x

23. electric potential a distance r from a charge
KQ/r
(V^2)/r
KI/r
((Qin) -(Qout))/(Qin)

24. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
opposite motion
V^2=(Vo)^2 +2a*change in x
(Fn)(mu)

25. hooke's law force of a spring
K |q||Q|/r^2
-KA
dSintheta=mwavelength
h/mv

26. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
sqrt(T/(m/))
h/mv
E/B
k|Q|/r^2

27. the units of power other than watts
constant pressure
joules/second
FV
KQ/r

28. formula relating voltage and electric field
qV
roeVg
Ed=V
hc/wavelength

29. type of collision where K is conserved
FV
elastic collision
1/2wavelength
KI/r

30. what direction is friction?
sqrt(3KT/m)
.5KA^2
opposite motion
dSintheta=mwavelength

31. formula for buoyant force
elastic collision
roeVg
sqrt(T/(m/))
V+IR

32. change in internal energy during a cyclic process
h/wavelength
qV
0
dSintheta=mwavelength

33. third kinematic
no heat flow
roeVg
V^2=(Vo)^2 +2a*change in x
(I^2)R

34. formula for constructive interference in a diffraction grating
M(Lf)
V = (Vo) + at
dSintheta=mwavelength
no force (right hand rule)

35. formula to find the gauge pressure at the bottom of a pool
(hc/wavelength)=h(Fo) +(Vs)
roegh
2Pi * sqrt(l/g)
(N2)/(N1)

36. the electric force between two objects of charge Q
(V^2)/r
no temp change
K |q||Q|/r^2
(Di)/(Do) or (Hi)/(Ho)

37. formula for impluse involving time
.5KA^2
J= Ft
0
mgCostheta(mu)d

38. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
F/A
deltaU = deltaQ + deltaW
-KA

39. isothermal
no temp change
sqrt(3KT/m)
Joules/Columb
BLv

40. radius of curvature of a charged particle as it enters a uniform magnetic field
KQ/r
m(v^2)/qvB
net work = delta K
(EMF)Rt/10

41. formula for efficiency of a heat engine using work out
(N2)/(N1)
sqrt(T/(m/))
(Wnet)/(Qin)
no force (right hand rule)

42. velocity of waves on a string if tension is known
opposite motion
sqrt(T/(m/))
qV
J= Ft

43. force of gravity between two objects of mass m
E/B
(N2)/(N1)
constant pressure
GM*M/(r^2)

44. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
M(Lf)
nSintheta=nsintheta
elastic collision

45. formula for torque
FV
rF
KI/r
(Fn)(mu)

46. units for voltage other than volts
K |q||Q|/r^2
V+IR
Joules/Columb
(3/2)nRdeltaT

47. focal length of a mirror with radius d
d/2
1/((1/C)+(1/C)..........)
qV
(Patm) + (Pgauge)

48. formula for charge stored in a capciator
V = (Vo) + at
2Pi * sqrt(l/g)
1/4wavelength
Q=CV

49. formula for finding magnetic flux
BA
sqrt(3KT/m)
KI/r
J= Ft

50. velocity of an electrion as it exitws from the hole
.5mV^2 + .5KA^2
qrB/m
-KA
Ed=V