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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. force of friction
FV
0
(Fn)(mu)
qV

2. type of collision where K is conserved
h/wavelength
2Pi * sqrt(l/g)
(EMF)Rt/10
elastic collision

3. equation of continuity
2nt=mwavelength
inelastic collision
AV=(A2)(V2)
E/B

4. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
AV=(A2)(V2)
h(Fo)
1/4wavelength
G M/((d/2)^2)

5. lens/mirror equation
(1/Do) + (1/Di) = (1/f)
dSintheta=mwavelength
delta x = (Vo)t + .5at^2
(N2)/(N1)

6. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
roegh
k|Q|/r^2
no force (right hand rule)

7. adibatic
no heat flow
F/A
KI/r
hc/wavelength

8. focal length of a mirror with radius d
.5mV^2 + .5KA^2
constant pressure
d/2
Ed=V

9. the force on a charge moving parallel to a magnetic field
dSintheta=mwavelength
no force (right hand rule)
2Pi * sqrt(l/g)
BLv

10. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
((Th) -(Tl))/(Th)
no temp change
Q=CV

11. pressure
F/A
deltaU -deltaW
Joules/Columb
constant pressure

12. natural frequency of an open tube of length L
2nt=mwavelength
hc/wavelength
1/2wavelength
dSintheta=mwavelength

13. heat during a cyclic process (net heat)
deltaU -deltaW
F/A
h(Fo)
joules/second

14. electric potential a distance r from a charge
G M/((d/2)^2)
(hc/wavelength)=h(Fo) +(Vs)
V^2=(Vo)^2 +2a*change in x
KQ/r

15. formula for height of the block (at the start of a pendulum string) in terms of theta and L
pL/A
deltaU = deltaQ + deltaW
L -LCostheta
(V^2)/r

16. second kinematic
2Pi * sqrt(l/g)
delta x = (Vo)t + .5at^2
rF
n(Cv)(deltaT)

17. isothermal
no temp change
((Qin) -(Qout))/(Qin)
1/4wavelength
(Wnet)/(Qin)

18. formula for impulse involving momentum
Joules/Columb
dSintheta=mwavelength
mV -m(Vo)
VI

19. energy stored in a capacitor
F/A
V^2=(Vo)^2 +2a*change in x
AV=(A2)(V2)
.5CV^2 or .5 Q^2/C or .5QV

20. formula for Carnot efficiency
((Th) -(Tl))/(Th)
deltaU = deltaQ + deltaW
mgCostheta(mu)d
qVB

21. isometric
nSintheta=nsintheta
Ed=V
constant volume
(V^2)/R

22. new wavelength of light as it enters a new substance
m(v^2)/qvB
qVB
(No)(wavelength)=(Nn)(new wavelength)
(Wnet)/(Qin)

23. EMF of a battery having internal resistance R
mgCostheta(mu)d
joules/second
V+IR
L -LCostheta

24. formula equating energy and mass
2nt=mwavelength
E/B
e=mc^2
d/2

25. formula for impluse involving time
delta x = (Vo)t + .5at^2
J= Ft
net work = delta K
(Patm) + (Pgauge)

26. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
constant volume
(V^2)/R
opposite motion
E/B

27. heat required to melt a substance
(I^2)RT
M(Lf)
MC(deltaT)
qE

28. velocity of a molecule of gas
V^2=(Vo)^2 +2a*change in x
sqrt(3KT/m)
roegh
2Pi * sqrt(l/g)

29. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
.5CV^2 or .5 Q^2/C or .5QV
(EMF)Rt/10
KI/r
qVB

30. formula for the wavelength (debroglie wavelength) of a moving particle
(I^2)RT
h/mv
2Pi * sqrt(l/g)
GM*M/(r^2)

31. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
2nt=mwavelength
(I^2)RT
mgCostheta(mu)d
constant pressure

32. natural frequency of a closed tube of length L
1/4wavelength
(V^2)/R
BLv
joules/second

33. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
V = (Vo) + at
qV
(Patm) + (Pgauge)
roegh

34. formula for period of a pendulum
E/B
2nt=mwavelength
2Pi * sqrt(l/g)
(I^2)RT

35. energy of a photon if wavelength is known
VI
hc/wavelength
E/B
V+IR

36. formula for constructive interference in a diffraction grating
dSintheta=mwavelength
F/A
.5KA^2
MC(deltaT)

37. formula for torque
rF
V^2=(Vo)^2 +2a*change in x
1/4wavelength
net work = delta K

38. formula for power with Voltage and resistance
k|Q|/r^2
(V^2)/R
((Qin) -(Qout))/(Qin)
.5KA^2

39. resistance of a wire
h/mv
m(v^2)/qvB
pL/A
e=mc^2

40. formula for finding magnetic flux
FV
h(Fo)
BA
(I^2)R

41. hooke's law force of a spring
-KA
1/2wavelength
MC(deltaT)
opposite motion

42. magnification equation
Ed=V
dSintheta=mwavelength
(Di)/(Do) or (Hi)/(Ho)
h/wavelength

43. formula for constructive interference in a thin membrane with two phase changes
Q=CV
2nt=mwavelength
delta x = (Vo)t + .5at^2
nSintheta=nsintheta

44. third kinematic
no heat flow
((Qin) -(Qout))/(Qin)
(N2)/(N1)
V^2=(Vo)^2 +2a*change in x

45. formula for charge stored in a capciator
J= Ft
constant volume
K |q||Q|/r^2
Q=CV

46. force of frction on an incline
mgCostheta(mu)d
V+IR
L -LCostheta
roeVg

47. the electric force between two objects of charge Q
K |q||Q|/r^2
FV
MC(deltaT)
Joules/Columb

48. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
BLv
delta x = (Vo)t + .5at^2
net work = delta K
.5mV^2 + .5KA^2

49. formula for efficiency not using work out
pL/A
rF
((Qin) -(Qout))/(Qin)
V+IR

50. formula for finding the momentum of a photon
(V^2)/R
mgCostheta(mu)d
2Pi * sqrt(l/g)
h/wavelength