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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. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
h/mv
(Wnet)/(Qin)
.5mV^2 + .5KA^2
net work = delta K

2. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
opposite motion
h(Fo)
L -LCostheta

3. velocity of a molecule of gas
E/B
sqrt(3KT/m)
e=mc^2
((Qin) -(Qout))/(Qin)

4. force of gravity between two objects of mass m
h/wavelength
no force (right hand rule)
M(Lf)
GM*M/(r^2)

5. formula for torque
0
nSintheta=nsintheta
Q=CV
rF

6. new wavelength of light as it enters a new substance
2Pi * sqrt(l/g)
qrB/m
mV -m(Vo)
(No)(wavelength)=(Nn)(new wavelength)

7. type of collision where objects stick togerther
.5mV^2 + .5KA^2
(I^2)RT
Ed=V
perfectly inelastic collision

8. third kinematic
mV -m(Vo)
AV=(A2)(V2)
V^2=(Vo)^2 +2a*change in x
sqrt(T/(m/))

9. the electric force between two objects of charge Q
K |q||Q|/r^2
Q=CV
2Pi * sqrt(l/g)
0

10. magnification equation
FV
M(Lf)
qVB
(Di)/(Do) or (Hi)/(Ho)

11. isothermal
no temp change
(I^2)RT
MC(deltaT)
2nt=mwavelength

12. units for voltage other than volts
F/A
Joules/Columb
(N2)/(N1)
(1/Do) + (1/Di) = (1/f)

13. formula to find the absoluate pressure at the bottom of a pool
roeVg
(Patm) + (Pgauge)
V+IR
VI

14. formula for finding magnetic flux
KQ/r
E/B
BA
BLv

15. 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
perfectly inelastic collision
.5KA^2
(I^2)RT

16. formula for period of a pendulum
1/((1/C)+(1/C)..........)
2Pi * sqrt(l/g)
GM*M/(r^2)
(I^2)RT

17. pressure
F/A
perfectly inelastic collision
e=mc^2
constant volume

18. adibatic
pL/A
(N2)/(N1)
FV
no heat flow

19. 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)
MC(deltaT)
dSintheta=mwavelength
(3/2)nRdeltaT

20. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
1/2wavelength
inelastic collision
0
E/B

21. velocity of an electrion as it exitws from the hole
(hc/wavelength)=h(Fo) +(Vs)
qrB/m
(Patm) + (Pgauge)
(I^2)R

22. first kinematic
Joules/Columb
qV
roeVg
V = (Vo) + at

23. formula for impulse involving momentum
roegh
joules/second
mV -m(Vo)
2nt=mwavelength

24. the units of current other than amps
Ed=V
Columbs/second
(I^2)R
(Fn)(mu)

25. electric field in a distance r from a charge
V^2=(Vo)^2 +2a*change in x
.5mV^2 + .5KA^2
k|Q|/r^2
BLv

26. formula equating energy and mass
(N2)/(N1)
deltaU -deltaW
e=mc^2
perfectly inelastic collision

27. equation of continuity
E/B
BA
AV=(A2)(V2)
2Pi * sqrt(l/g)

28. formula relating voltage and electric field
Ed=V
deltaU = deltaQ + deltaW
h/mv
elastic collision

29. formula for critical angle
h/mv
(N2)/(N1)
mgCostheta(mu)d
((Th) -(Tl))/(Th)

30. natural frequency of a closed tube of length L
dSintheta=mwavelength
(V^2)/R
Joules/Columb
1/4wavelength

31. formula for centripetal acceleration
K |q||Q|/r^2
0
F/A
(V^2)/r

32. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
(EMF)Rt/10
G M/((d/2)^2)
Ed=V
qV

33. EMF of a battery having internal resistance R
qrB/m
net work = delta K
V+IR
AV=(A2)(V2)

34. formula for height of the block (at the start of a pendulum string) in terms of theta and L
L -LCostheta
KI/r
(I^2)R
dSintheta=mwavelength

35. formula for efficiency not using work out
(N2)/(N1)
K |q||Q|/r^2
((Qin) -(Qout))/(Qin)
d/2

36. formula for finding the momentum of a photon
qrB/m
h/wavelength
qE
qVB

37. formula for efficiency of a heat engine using work out
hc/wavelength
m(v^2)/qvB
no force (right hand rule)
(Wnet)/(Qin)

38. total capacitance of capacitors in series
qVB
h(Fo)
1/((1/C)+(1/C)..........)
KI/r

39. equation for the first law of thermodynamics
Joules/Columb
deltaU = deltaQ + deltaW
m(v^2)/qvB
(I^2)RT

40. voltage induced in a rod moving through a uniform magnetic field
perfectly inelastic collision
BLv
frequency never changes for light problems
h/mv

41. hooke's law force of a spring
sqrt(T/(m/))
qV
rF
-KA

42. formula for change in internal energy in a cosnstat volume PV process
d/2
(3/2)nRdeltaT
rF
sqrt(3KT/m)

43. formula for constructive interference in a thin membrane with two phase changes
2nt=mwavelength
qV
rF
roegh

44. heat during an isometric process
sqrt(T/(m/))
(1/Do) + (1/Di) = (1/f)
n(Cv)(deltaT)
no heat flow

45. forgotten power equation
F/A
(V^2)/R
roegh
FV

46. lens/mirror equation
d/2
V+IR
(1/Do) + (1/Di) = (1/f)
roeVg

47. the units of power other than watts
E/B
h(Fo)
roegh
joules/second

48. formula for power with current and voltage
2Pi * sqrt(l/g)
constant volume
VI
qrB/m

49. electric potential a distance r from a charge
(1/Do) + (1/Di) = (1/f)
no force (right hand rule)
KQ/r
qV

50. heat during a cyclic process (net heat)
dSintheta=mwavelength
(hc/wavelength)=h(Fo) +(Vs)
deltaU -deltaW
joules/second