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. the units of current other than amps
Columbs/second
(Patm) + (Pgauge)
h/wavelength
FV

2. lens/mirror equation
-KA
(I^2)R
(1/Do) + (1/Di) = (1/f)
sqrt(3KT/m)

3. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
AV=(A2)(V2)
h(Fo)
n(Cv)(deltaT)
E/B

4. the electric force between two objects of charge Q
(Wnet)/(Qin)
K |q||Q|/r^2
dSintheta=mwavelength
(1/Do) + (1/Di) = (1/f)

5. electric field in a distance r from a charge
.5KA^2
.5CV^2 or .5 Q^2/C or .5QV
k|Q|/r^2
deltaU = deltaQ + deltaW

6. formula for power with current and voltage
perfectly inelastic collision
n(Cv)(deltaT)
VI
h/mv

7. heat required to melt a substance
delta x = (Vo)t + .5at^2
M(Lf)
qE
KQ/r

8. heat during a cyclic process (net heat)
qV
k|Q|/r^2
pL/A
deltaU -deltaW

9. formula for finding magnetic flux
sqrt(T/(m/))
deltaU -deltaW
BA
pL/A

10. new wavelength of light as it enters a new substance
roeVg
(No)(wavelength)=(Nn)(new wavelength)
(I^2)R
sqrt(3KT/m)

11. formula for torque
rF
h(Fo)
.5mV^2 + .5KA^2
nSintheta=nsintheta

12. force a charge in a Bfield
1/((1/C)+(1/C)..........)
(I^2)R
qVB
delta x = (Vo)t + .5at^2

13. formula for finding the momentum of a photon
L -LCostheta
GM*M/(r^2)
(V^2)/r
h/wavelength

14. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
(V^2)/R
constant pressure
G M/((d/2)^2)
(EMF)Rt/10

15. the force on a charge moving parallel to a magnetic field
(V^2)/r
no force (right hand rule)
FV
elastic collision

16. formula for impulse involving momentum
-KA
m(v^2)/qvB
mV -m(Vo)
qE

17. formula for centripetal acceleration
qrB/m
(V^2)/r
dSintheta=mwavelength
(Fn)(mu)

18. electric potential a distance r from a charge
pL/A
qVB
opposite motion
KQ/r

19. velocity of a molecule of gas
V = (Vo) + at
inelastic collision
sqrt(3KT/m)
2nt=mwavelength

20. total capacitance of capacitors in series
(I^2)R
BLv
net work = delta K
1/((1/C)+(1/C)..........)

21. new frequency of light as it enters a new substance
mgCostheta(mu)d
frequency never changes for light problems
pL/A
deltaU = deltaQ + deltaW

22. isometric
no force (right hand rule)
J= Ft
qVB
constant volume

23. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(1/Do) + (1/Di) = (1/f)
constant volume
qV
h/mv

24. formula relating voltage and electric field
e=mc^2
.5CV^2 or .5 Q^2/C or .5QV
Ed=V
(V^2)/R

25. 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
1/4wavelength
Ed=V
mV -m(Vo)

26. hooke's law force of a spring
roegh
Columbs/second
-KA
dSintheta=mwavelength

27. velocity of waves on a string if tension is known
frequency never changes for light problems
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))
joules/second

28. formula for the wavelength (debroglie wavelength) of a moving particle
constant volume
h/mv
e=mc^2
Q=CV

29. formula equating energy and mass
pL/A
2nt=mwavelength
K |q||Q|/r^2
e=mc^2

30. resistance of a wire
pL/A
elastic collision
V^2=(Vo)^2 +2a*change in x
nSintheta=nsintheta

31. force of gravity between two objects of mass m
-KA
frequency never changes for light problems
KQ/r
GM*M/(r^2)

32. type of collision where K is not conserved
inelastic collision
d/2
h(Fo)
(V^2)/R

33. first kinematic
roegh
BLv
1/((1/C)+(1/C)..........)
V = (Vo) + at

34. snells law
no force (right hand rule)
net work = delta K
nSintheta=nsintheta
deltaU = deltaQ + deltaW

35. energy of a photon if wavelength is known
J= Ft
hc/wavelength
M(Lf)
mgCostheta(mu)d

36. focal length of a mirror with radius d
0
.5CV^2 or .5 Q^2/C or .5QV
constant volume
d/2

37. formula for efficiency of a heat engine using work out
Columbs/second
(Wnet)/(Qin)
(No)(wavelength)=(Nn)(new wavelength)
Ed=V

38. second kinematic
qE
(hc/wavelength)=h(Fo) +(Vs)
h(Fo)
delta x = (Vo)t + .5at^2

39. pressure
F/A
.5CV^2 or .5 Q^2/C or .5QV
(V^2)/r
J= Ft

40. formula for charge stored in a capciator
no heat flow
Q=CV
BLv
KQ/r

41. force of friction
(No)(wavelength)=(Nn)(new wavelength)
pL/A
(Fn)(mu)
2Pi * sqrt(l/g)

42. formula for constructive interference in a diffraction grating
.5mV^2 + .5KA^2
((Th) -(Tl))/(Th)
dSintheta=mwavelength
elastic collision

43. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
GM*M/(r^2)
((Th) -(Tl))/(Th)
.5mV^2 + .5KA^2
opposite motion

44. heat required to change temperature of a substance
constant pressure
L -LCostheta
1/4wavelength
MC(deltaT)

45. change in internal energy during a cyclic process
V = (Vo) + at
(V^2)/r
0
1/((1/C)+(1/C)..........)

46. formula for power with current and resistance
(I^2)R
qE
BA
(V^2)/R

47. magnification equation
V = (Vo) + at
(Di)/(Do) or (Hi)/(Ho)
FV
elastic collision

48. what direction is friction?
(V^2)/R
opposite motion
(V^2)/r
BA

49. formula for power with Voltage and resistance
(V^2)/R
(N2)/(N1)
perfectly inelastic collision
(Wnet)/(Qin)

50. voltage induced in a rod moving through a uniform magnetic field
V^2=(Vo)^2 +2a*change in x
BLv
qE
(EMF)Rt/10