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. isothermal
sqrt(3KT/m)
F/A
no temp change
qVB

2. what direction is friction?
opposite motion
(3/2)nRdeltaT
Joules/Columb
h(Fo)

3. formula for Carnot efficiency
J= Ft
delta x = (Vo)t + .5at^2
(Wnet)/(Qin)
((Th) -(Tl))/(Th)

4. formula for finding the momentum of a photon
Ed=V
Q=CV
h/wavelength
.5CV^2 or .5 Q^2/C or .5QV

5. new frequency of light as it enters a new substance
h(Fo)
frequency never changes for light problems
joules/second
(N2)/(N1)

6. formula equating energy and mass
h/wavelength
(hc/wavelength)=h(Fo) +(Vs)
VI
e=mc^2

7. second kinematic
(Wnet)/(Qin)
hc/wavelength
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2

8. formula for constructive interference in a diffraction grating
0
Q=CV
dSintheta=mwavelength
elastic collision

9. formula for impluse involving time
FV
e=mc^2
J= Ft
L -LCostheta

10. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
(N2)/(N1)
V^2=(Vo)^2 +2a*change in x
0
(I^2)RT

11. voltage induced in a rod moving through a uniform magnetic field
FV
((Th) -(Tl))/(Th)
dSintheta=mwavelength
BLv

12. velocity of a molecule of gas
qE
((Qin) -(Qout))/(Qin)
(Fn)(mu)
sqrt(3KT/m)

13. third kinematic
Q=CV
(V^2)/R
V^2=(Vo)^2 +2a*change in x
(1/Do) + (1/Di) = (1/f)

14. electric field in a distance r from a charge
(V^2)/r
2Pi * sqrt(l/g)
k|Q|/r^2
AV=(A2)(V2)

15. formula for charge stored in a capciator
hc/wavelength
constant volume
AV=(A2)(V2)
Q=CV

16. pressure
(I^2)R
roeVg
F/A
d/2

17. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
(Wnet)/(Qin)
frequency never changes for light problems
G M/((d/2)^2)
E/B

18. formula for finding magnetic flux
Columbs/second
FV
mV -m(Vo)
BA

19. heat required to change temperature of a substance
.5KA^2
FV
MC(deltaT)
(Di)/(Do) or (Hi)/(Ho)

20. magnification equation
(Di)/(Do) or (Hi)/(Ho)
BLv
deltaU -deltaW
KQ/r

21. energy of a photon if wavelength is known
V+IR
hc/wavelength
J= Ft
roegh

22. snells law
V = (Vo) + at
(Fn)(mu)
sqrt(3KT/m)
nSintheta=nsintheta

23. formula for centripetal acceleration
e=mc^2
(V^2)/r
inelastic collision
1/2wavelength

24. heat during an isometric process
(Wnet)/(Qin)
n(Cv)(deltaT)
K |q||Q|/r^2
no heat flow

25. adibatic
(1/Do) + (1/Di) = (1/f)
no heat flow
1/4wavelength
qVB

26. units for voltage other than volts
deltaU -deltaW
(hc/wavelength)=h(Fo) +(Vs)
KQ/r
Joules/Columb

27. formula for impulse involving momentum
pL/A
net work = delta K
(V^2)/r
mV -m(Vo)

28. natural frequency of an open tube of length L
1/2wavelength
MC(deltaT)
n(Cv)(deltaT)
K |q||Q|/r^2

29. change in internal energy during a cyclic process
0
Joules/Columb
KI/r
(I^2)R

30. isobaric
constant pressure
Columbs/second
J= Ft
1/2wavelength

31. the units of power other than watts
joules/second
qE
roegh
F/A

32. velocity of an electrion as it exitws from the hole
pL/A
V+IR
qrB/m
d/2

33. formula for power with current and resistance
J= Ft
(I^2)R
2Pi * sqrt(l/g)
F/A

34. electric potential a distance r from a charge
k|Q|/r^2
J= Ft
K |q||Q|/r^2
KQ/r

35. formula for energy of a spring mass when spring is at maximum displacement
-KA
.5KA^2
(1/Do) + (1/Di) = (1/f)
FV

36. lens/mirror equation
AV=(A2)(V2)
(1/Do) + (1/Di) = (1/f)
qV
nSintheta=nsintheta

37. formula for finding the magnetic field a distance r from a current carrying wire
FV
KI/r
V^2=(Vo)^2 +2a*change in x
J= Ft

38. formula for efficiency of a heat engine using work out
(hc/wavelength)=h(Fo) +(Vs)
mV -m(Vo)
m(v^2)/qvB
(Wnet)/(Qin)

39. the force on a charge moving parallel to a magnetic field
(V^2)/r
no force (right hand rule)
J= Ft
net work = delta K

40. formula for height of the block (at the start of a pendulum string) in terms of theta and L
KI/r
K |q||Q|/r^2
constant volume
L -LCostheta

41. focal length of a mirror with radius d
constant pressure
E/B
0
d/2

42. equation of continuity
AV=(A2)(V2)
no temp change
(I^2)RT
net work = delta K

43. the units of current other than amps
Columbs/second
h(Fo)
qE
V+IR

44. the force on a charge in an electric field
Columbs/second
qE
.5KA^2
(V^2)/r

45. energy stored in a capacitor
.5CV^2 or .5 Q^2/C or .5QV
F/A
e=mc^2
(3/2)nRdeltaT

46. forgotten power equation
dSintheta=mwavelength
V = (Vo) + at
((Th) -(Tl))/(Th)
FV

47. formula for critical angle
K |q||Q|/r^2
1/((1/C)+(1/C)..........)
(N2)/(N1)
frequency never changes for light problems

48. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
Columbs/second
1/4wavelength
(hc/wavelength)=h(Fo) +(Vs)
KI/r

49. hooke's law force of a spring
BA
(N2)/(N1)
KQ/r
-KA

50. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
e=mc^2
1/((1/C)+(1/C)..........)
E/B