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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
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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. natural frequency of a closed tube of length L
1/4wavelength
(No)(wavelength)=(Nn)(new wavelength)
constant pressure
perfectly inelastic collision

2. formula for constructive interference in a diffraction grating
(V^2)/r
.5KA^2
deltaU = deltaQ + deltaW
dSintheta=mwavelength

3. pressure
F/A
(No)(wavelength)=(Nn)(new wavelength)
(V^2)/R
inelastic collision

4. formula for buoyant force
nSintheta=nsintheta
(I^2)RT
V^2=(Vo)^2 +2a*change in x
roeVg

5. equation for the first law of thermodynamics
(Di)/(Do) or (Hi)/(Ho)
deltaU = deltaQ + deltaW
K |q||Q|/r^2
h/wavelength

6. the force on a charge in an electric field
sqrt(T/(m/))
qE
L -LCostheta
constant volume

7. work energy theorum
net work = delta K
elastic collision
(Fn)(mu)
1/4wavelength

8. velocity of waves on a string if tension is known
sqrt(T/(m/))
no heat flow
(hc/wavelength)=h(Fo) +(Vs)
0

9. formula for impulse involving momentum
roegh
1/4wavelength
Q=CV
mV -m(Vo)

10. natural frequency of an open tube of length L
(EMF)Rt/10
qV
1/2wavelength
n(Cv)(deltaT)

11. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
qE
no force (right hand rule)
deltaU = deltaQ + deltaW

12. heat during a cyclic process (net heat)
deltaU -deltaW
1/4wavelength
elastic collision
inelastic collision

13. second kinematic
delta x = (Vo)t + .5at^2
K |q||Q|/r^2
d/2
no temp change

14. formula for power with current and resistance
(I^2)R
V = (Vo) + at
hc/wavelength
J= Ft

15. type of collision where K is not conserved
inelastic collision
2Pi * sqrt(l/g)
(I^2)R
.5mV^2 + .5KA^2

16. formula for critical angle
n(Cv)(deltaT)
(V^2)/r
frequency never changes for light problems
(N2)/(N1)

17. forgotten power equation
qV
FV
no temp change
2nt=mwavelength

18. focal length of a mirror with radius d
d/2
qV
Ed=V
e=mc^2

19. 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
L -LCostheta
qVB
roegh

20. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
opposite motion
hc/wavelength
.5mV^2 + .5KA^2
-KA

21. EMF of a battery having internal resistance R
FV
inelastic collision
V+IR
KQ/r

22. adibatic
no heat flow
no temp change
(Wnet)/(Qin)
rF

23. energy stored in a capacitor
deltaU -deltaW
.5CV^2 or .5 Q^2/C or .5QV
1/((1/C)+(1/C)..........)
FV

24. change in internal energy during a cyclic process
mgCostheta(mu)d
(V^2)/r
no force (right hand rule)
0

25. formula for finding magnetic flux
(No)(wavelength)=(Nn)(new wavelength)
sqrt(3KT/m)
Ed=V
BA

26. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
L -LCostheta
k|Q|/r^2
(hc/wavelength)=h(Fo) +(Vs)
no temp change

27. type of collision where K is conserved
.5KA^2
elastic collision
G M/((d/2)^2)
no temp change

28. formula for period of a pendulum
BA
2Pi * sqrt(l/g)
(No)(wavelength)=(Nn)(new wavelength)
KI/r

29. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(EMF)Rt/10
Q=CV
d/2
GM*M/(r^2)

30. electric field in a distance r from a charge
k|Q|/r^2
net work = delta K
BLv
roegh

31. force of frction on an incline
mgCostheta(mu)d
qV
KQ/r
deltaU = deltaQ + deltaW

32. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
E/B
AV=(A2)(V2)
2nt=mwavelength
mV -m(Vo)

33. new frequency of light as it enters a new substance
m(v^2)/qvB
(I^2)RT
frequency never changes for light problems
no force (right hand rule)

34. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
(Di)/(Do) or (Hi)/(Ho)
sqrt(3KT/m)
Columbs/second

35. the units of power other than watts
0
joules/second
(No)(wavelength)=(Nn)(new wavelength)
elastic collision

36. what direction is friction?
opposite motion
inelastic collision
K |q||Q|/r^2
G M/((d/2)^2)

37. velocity of an electrion as it exitws from the hole
(Fn)(mu)
qrB/m
((Th) -(Tl))/(Th)
K |q||Q|/r^2

38. equation of continuity
V+IR
m(v^2)/qvB
AV=(A2)(V2)
h/mv

39. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
GM*M/(r^2)
G M/((d/2)^2)
BLv
sqrt(T/(m/))

40. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
qE
(I^2)RT
KI/r

41. formula for power with Voltage and resistance
(V^2)/R
m(v^2)/qvB
E/B
KQ/r

42. force of gravity between two objects of mass m
FV
opposite motion
GM*M/(r^2)
mV -m(Vo)

43. formula for change in internal energy in a cosnstat volume PV process
BA
constant pressure
(3/2)nRdeltaT
E/B

44. formula for the wavelength (debroglie wavelength) of a moving particle
(N2)/(N1)
opposite motion
(EMF)Rt/10
h/mv

45. force of friction
E/B
V+IR
net work = delta K
(Fn)(mu)

46. formula equating energy and mass
M(Lf)
(V^2)/r
no temp change
e=mc^2

47. formula relating voltage and electric field
.5CV^2 or .5 Q^2/C or .5QV
Ed=V
(EMF)Rt/10
(Fn)(mu)

48. hooke's law force of a spring
-KA
0
opposite motion
1/2wavelength

49. third kinematic
J= Ft
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))
n(Cv)(deltaT)

50. units for voltage other than volts
Joules/Columb
-KA
dSintheta=mwavelength
1/4wavelength