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
1/2wavelength
dSintheta=mwavelength
(3/2)nRdeltaT
mV -m(Vo)

2. voltage induced in a rod moving through a uniform magnetic field
constant volume
deltaU -deltaW
Q=CV
BLv

3. formula for power with current and resistance
FV
(I^2)R
2Pi * sqrt(l/g)
roegh

4. new frequency of light as it enters a new substance
2Pi * sqrt(l/g)
(V^2)/R
V+IR
frequency never changes for light problems

5. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
BA
(V^2)/R
mV -m(Vo)

6. velocity of an electrion as it exitws from the hole
qrB/m
Columbs/second
KI/r
((Qin) -(Qout))/(Qin)

7. formula for power with current and voltage
1/4wavelength
qV
n(Cv)(deltaT)
VI

8. lens/mirror equation
qE
elastic collision
(1/Do) + (1/Di) = (1/f)
F/A

9. heat required to melt a substance
h/mv
constant volume
M(Lf)
(hc/wavelength)=h(Fo) +(Vs)

10. formula for height of the block (at the start of a pendulum string) in terms of theta and L
2nt=mwavelength
L -LCostheta
Ed=V
(Di)/(Do) or (Hi)/(Ho)

11. force a charge in a Bfield
Ed=V
M(Lf)
qVB
rF

12. formula for finding the momentum of a photon
h/wavelength
Q=CV
(I^2)R
AV=(A2)(V2)

13. type of collision where K is conserved
elastic collision
frequency never changes for light problems
GM*M/(r^2)
(I^2)R

14. focal length of a mirror with radius d
E/B
.5mV^2 + .5KA^2
d/2
opposite motion

15. formula for finding the work function of a metal if the cutoff frequency is known
VI
net work = delta K
pL/A
h(Fo)

16. natural frequency of an open tube of length L
qVB
E/B
hc/wavelength
1/2wavelength

17. formula for buoyant force
K |q||Q|/r^2
no force (right hand rule)
-KA
roeVg

18. formula for power with Voltage and resistance
(V^2)/R
.5CV^2 or .5 Q^2/C or .5QV
K |q||Q|/r^2
FV

19. equation of continuity
(1/Do) + (1/Di) = (1/f)
roeVg
G M/((d/2)^2)
AV=(A2)(V2)

20. heat during a cyclic process (net heat)
pL/A
sqrt(3KT/m)
deltaU -deltaW
k|Q|/r^2

21. electric field in a distance r from a charge
h/wavelength
k|Q|/r^2
(V^2)/r
constant pressure

22. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
perfectly inelastic collision
pL/A
nSintheta=nsintheta

23. change in internal energy during a cyclic process
qE
inelastic collision
0
(N2)/(N1)

24. third kinematic
roeVg
constant volume
delta x = (Vo)t + .5at^2
V^2=(Vo)^2 +2a*change in x

25. formula for impulse involving momentum
inelastic collision
mV -m(Vo)
deltaU -deltaW
n(Cv)(deltaT)

26. resistance of a wire
.5mV^2 + .5KA^2
pL/A
constant pressure
m(v^2)/qvB

27. formula for period of a pendulum
2Pi * sqrt(l/g)
J= Ft
h(Fo)
(hc/wavelength)=h(Fo) +(Vs)

28. electric potential a distance r from a charge
perfectly inelastic collision
VI
KQ/r
d/2

29. units for voltage other than volts
perfectly inelastic collision
Joules/Columb
dSintheta=mwavelength
deltaU -deltaW

30. formula relating voltage and electric field
0
mV -m(Vo)
Ed=V
pL/A

31. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
perfectly inelastic collision
(hc/wavelength)=h(Fo) +(Vs)
BLv
E/B

32. type of collision where objects stick togerther
perfectly inelastic collision
V = (Vo) + at
sqrt(3KT/m)
constant pressure

33. formula to find the absoluate pressure at the bottom of a pool
e=mc^2
Ed=V
rF
(Patm) + (Pgauge)

34. formula for finding magnetic flux
roeVg
pL/A
BA
qrB/m

35. formula for critical angle
-KA
(N2)/(N1)
constant volume
rF

36. formula for efficiency of a heat engine using work out
(Fn)(mu)
(hc/wavelength)=h(Fo) +(Vs)
no force (right hand rule)
(Wnet)/(Qin)

37. formula for impluse involving time
k|Q|/r^2
J= Ft
M(Lf)
E/B

38. snells law
MC(deltaT)
rF
m(v^2)/qvB
nSintheta=nsintheta

39. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
qVB
no heat flow
no temp change

40. force of friction
n(Cv)(deltaT)
(Fn)(mu)
G M/((d/2)^2)
(1/Do) + (1/Di) = (1/f)

41. isometric
constant volume
dSintheta=mwavelength
(hc/wavelength)=h(Fo) +(Vs)
VI

42. what direction is friction?
qV
1/((1/C)+(1/C)..........)
opposite motion
elastic collision

43. the force on a charge moving parallel to a magnetic field
qE
no force (right hand rule)
qV
V^2=(Vo)^2 +2a*change in x

44. work energy theorum
qrB/m
h(Fo)
net work = delta K
1/4wavelength

45. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
h/mv
d/2
(EMF)Rt/10

46. heat required to change temperature of a substance
(V^2)/r
J= Ft
qVB
MC(deltaT)

47. formula for constructive interference in a diffraction grating
(I^2)R
qV
e=mc^2
dSintheta=mwavelength

48. formula for centripetal acceleration
h/wavelength
0
(V^2)/r
net work = delta K

49. force of gravity between two objects of mass m
(I^2)R
h(Fo)
GM*M/(r^2)
n(Cv)(deltaT)

50. hooke's law force of a spring
(Di)/(Do) or (Hi)/(Ho)
M(Lf)
-KA
1/4wavelength