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. formula for change in internal energy in a cosnstat volume PV process
qV
perfectly inelastic collision
K |q||Q|/r^2
(3/2)nRdeltaT

2. velocity of an electrion as it exitws from the hole
J= Ft
E/B
qrB/m
KQ/r

3. lens/mirror equation
VI
(1/Do) + (1/Di) = (1/f)
pL/A
KI/r

4. work energy theorum
0
V+IR
J= Ft
net work = delta K

5. 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)R
no heat flow
(I^2)RT
m(v^2)/qvB

6. resistance of a wire
h/mv
constant pressure
pL/A
Q=CV

7. natural frequency of a closed tube of length L
1/4wavelength
n(Cv)(deltaT)
Joules/Columb
(Patm) + (Pgauge)

8. EMF of a battery having internal resistance R
d/2
FV
((Th) -(Tl))/(Th)
V+IR

9. isometric
(hc/wavelength)=h(Fo) +(Vs)
F/A
nSintheta=nsintheta
constant volume

10. change in internal energy during a cyclic process
0
K |q||Q|/r^2
-KA
G M/((d/2)^2)

11. formula for buoyant force
KQ/r
roeVg
constant volume
(I^2)R

12. force a charge in a Bfield
qVB
nSintheta=nsintheta
0
Columbs/second

13. second kinematic
h(Fo)
2nt=mwavelength
(V^2)/r
delta x = (Vo)t + .5at^2

14. type of collision where objects stick togerther
no force (right hand rule)
AV=(A2)(V2)
elastic collision
perfectly inelastic collision

15. pressure
frequency never changes for light problems
2Pi * sqrt(l/g)
F/A
rF

16. formula for power with current and voltage
qV
k|Q|/r^2
VI
(V^2)/R

17. heat required to melt a substance
M(Lf)
inelastic collision
n(Cv)(deltaT)
AV=(A2)(V2)

18. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
constant volume
G M/((d/2)^2)
(3/2)nRdeltaT
net work = delta K

19. force of frction on an incline
GM*M/(r^2)
frequency never changes for light problems
mgCostheta(mu)d
G M/((d/2)^2)

20. heat during an isometric process
roeVg
L -LCostheta
n(Cv)(deltaT)
h/wavelength

21. isothermal
net work = delta K
(3/2)nRdeltaT
2nt=mwavelength
no temp change

22. snells law
AV=(A2)(V2)
nSintheta=nsintheta
K |q||Q|/r^2
Joules/Columb

23. hooke's law force of a spring
inelastic collision
-KA
(V^2)/r
AV=(A2)(V2)

24. energy of a photon if wavelength is known
KQ/r
(V^2)/r
hc/wavelength
Q=CV

25. the force on a charge moving parallel to a magnetic field
AV=(A2)(V2)
net work = delta K
no force (right hand rule)
.5KA^2

26. formula for impulse involving momentum
mV -m(Vo)
delta x = (Vo)t + .5at^2
L -LCostheta
(1/Do) + (1/Di) = (1/f)

27. velocity of a molecule of gas
net work = delta K
pL/A
sqrt(3KT/m)
roeVg

28. voltage induced in a rod moving through a uniform magnetic field
frequency never changes for light problems
1/2wavelength
BLv
qVB

29. units for voltage other than volts
Joules/Columb
Ed=V
roeVg
perfectly inelastic collision

30. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
F/A
BA
opposite motion

31. force of friction
h/wavelength
pL/A
no heat flow
(Fn)(mu)

32. formula for energy of a spring mass when spring is at maximum displacement
net work = delta K
.5KA^2
V^2=(Vo)^2 +2a*change in x
V = (Vo) + at

33. focal length of a mirror with radius d
e=mc^2
V+IR
d/2
nSintheta=nsintheta

34. third kinematic
V^2=(Vo)^2 +2a*change in x
Ed=V
0
KI/r

35. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
((Qin) -(Qout))/(Qin)
k|Q|/r^2
qVB

36. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
F/A
qV
-KA
h/mv

37. formula equating energy and mass
e=mc^2
(EMF)Rt/10
inelastic collision
roeVg

38. force of gravity between two objects of mass m
net work = delta K
GM*M/(r^2)
elastic collision
(hc/wavelength)=h(Fo) +(Vs)

39. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
Columbs/second
no force (right hand rule)
(Patm) + (Pgauge)
E/B

40. formula for finding the magnetic field a distance r from a current carrying wire
1/4wavelength
KI/r
hc/wavelength
.5CV^2 or .5 Q^2/C or .5QV

41. what direction is friction?
sqrt(3KT/m)
M(Lf)
opposite motion
deltaU = deltaQ + deltaW

42. formula for power with Voltage and resistance
delta x = (Vo)t + .5at^2
(V^2)/R
roegh
GM*M/(r^2)

43. natural frequency of an open tube of length L
1/2wavelength
G M/((d/2)^2)
0
n(Cv)(deltaT)

44. heat during a cyclic process (net heat)
FV
deltaU -deltaW
(EMF)Rt/10
(No)(wavelength)=(Nn)(new wavelength)

45. first kinematic
V = (Vo) + at
(Patm) + (Pgauge)
E/B
k|Q|/r^2

46. energy stored in a capacitor
qrB/m
(1/Do) + (1/Di) = (1/f)
2nt=mwavelength
.5CV^2 or .5 Q^2/C or .5QV

47. new frequency of light as it enters a new substance
frequency never changes for light problems
M(Lf)
(V^2)/R
MC(deltaT)

48. magnification equation
KI/r
V = (Vo) + at
E/B
(Di)/(Do) or (Hi)/(Ho)

49. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
BA
2nt=mwavelength
dSintheta=mwavelength
(hc/wavelength)=h(Fo) +(Vs)

50. formula to find the absoluate pressure at the bottom of a pool
constant pressure
(Patm) + (Pgauge)
AV=(A2)(V2)
V^2=(Vo)^2 +2a*change in x