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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. what direction is friction?
opposite motion
1/((1/C)+(1/C)..........)
frequency never changes for light problems
k|Q|/r^2

2. formula for constructive interference in a diffraction grating
(3/2)nRdeltaT
dSintheta=mwavelength
K |q||Q|/r^2
AV=(A2)(V2)

3. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
constant pressure
M(Lf)
qV
joules/second

4. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
constant volume
(EMF)Rt/10
2nt=mwavelength
no heat flow

5. units for voltage other than volts
elastic collision
sqrt(T/(m/))
Joules/Columb
VI

6. formula for height of the block (at the start of a pendulum string) in terms of theta and L
(V^2)/R
L -LCostheta
h(Fo)
h/wavelength

7. type of collision where objects stick togerther
V = (Vo) + at
E/B
.5mV^2 + .5KA^2
perfectly inelastic collision

8. type of collision where K is conserved
no heat flow
elastic collision
1/4wavelength
inelastic collision

9. velocity of an electrion as it exitws from the hole
deltaU = deltaQ + deltaW
dSintheta=mwavelength
(Di)/(Do) or (Hi)/(Ho)
qrB/m

10. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
nSintheta=nsintheta
(V^2)/r
(3/2)nRdeltaT
E/B

11. magnification equation
(Di)/(Do) or (Hi)/(Ho)
e=mc^2
(I^2)RT
BLv

12. second kinematic
pL/A
delta x = (Vo)t + .5at^2
(3/2)nRdeltaT
((Qin) -(Qout))/(Qin)

13. third kinematic
(No)(wavelength)=(Nn)(new wavelength)
mV -m(Vo)
V^2=(Vo)^2 +2a*change in x
qrB/m

14. formula for finding the magnetic field a distance r from a current carrying wire
Q=CV
(I^2)RT
KI/r
m(v^2)/qvB

15. first kinematic
(3/2)nRdeltaT
V = (Vo) + at
1/4wavelength
1/2wavelength

16. forgotten power equation
(EMF)Rt/10
FV
M(Lf)
0

17. type of collision where K is not conserved
2Pi * sqrt(l/g)
BA
h/wavelength
inelastic collision

18. the electric force between two objects of charge Q
KQ/r
K |q||Q|/r^2
G M/((d/2)^2)
(Di)/(Do) or (Hi)/(Ho)

19. work energy theorum
KI/r
net work = delta K
roeVg
V^2=(Vo)^2 +2a*change in x

20. 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
opposite motion
d/2
V^2=(Vo)^2 +2a*change in x

21. electric potential a distance r from a charge
perfectly inelastic collision
2Pi * sqrt(l/g)
KQ/r
k|Q|/r^2

22. the force on a charge in an electric field
(No)(wavelength)=(Nn)(new wavelength)
qE
(N2)/(N1)
KQ/r

23. formula equating energy and mass
rF
AV=(A2)(V2)
elastic collision
e=mc^2

24. equation of continuity
AV=(A2)(V2)
K |q||Q|/r^2
Q=CV
((Qin) -(Qout))/(Qin)

25. formula for critical angle
K |q||Q|/r^2
no temp change
(N2)/(N1)
(Di)/(Do) or (Hi)/(Ho)

26. formula for change in internal energy in a cosnstat volume PV process
(V^2)/r
mgCostheta(mu)d
(3/2)nRdeltaT
rF

27. snells law
1/4wavelength
rF
no heat flow
nSintheta=nsintheta

28. EMF of a battery having internal resistance R
qrB/m
FV
V+IR
(Wnet)/(Qin)

29. the units of current other than amps
k|Q|/r^2
Columbs/second
MC(deltaT)
K |q||Q|/r^2

30. change in internal energy during a cyclic process
Joules/Columb
.5CV^2 or .5 Q^2/C or .5QV
V = (Vo) + at
0

31. formula for torque
rF
(Di)/(Do) or (Hi)/(Ho)
Ed=V
E/B

32. energy stored in a capacitor
no force (right hand rule)
.5CV^2 or .5 Q^2/C or .5QV
h(Fo)
perfectly inelastic collision

33. formula to find the gauge pressure at the bottom of a pool
roegh
e=mc^2
mV -m(Vo)
(EMF)Rt/10

34. formula for efficiency of a heat engine using work out
1/((1/C)+(1/C)..........)
Q=CV
d/2
(Wnet)/(Qin)

35. formula for Carnot efficiency
((Th) -(Tl))/(Th)
pL/A
mV -m(Vo)
Ed=V

36. the force on a charge moving parallel to a magnetic field
2Pi * sqrt(l/g)
BLv
no force (right hand rule)
E/B

37. formula for period of a pendulum
(Di)/(Do) or (Hi)/(Ho)
deltaU = deltaQ + deltaW
BLv
2Pi * sqrt(l/g)

38. pressure
elastic collision
F/A
rF
Q=CV

39. resistance of a wire
pL/A
.5CV^2 or .5 Q^2/C or .5QV
opposite motion
(V^2)/R

40. electric field in a distance r from a charge
k|Q|/r^2
d/2
Ed=V
roegh

41. natural frequency of a closed tube of length L
qVB
Joules/Columb
1/4wavelength
mV -m(Vo)

42. heat during an isometric process
joules/second
0
rF
n(Cv)(deltaT)

43. formula for charge stored in a capciator
deltaU = deltaQ + deltaW
no heat flow
Q=CV
deltaU -deltaW

44. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
nSintheta=nsintheta
G M/((d/2)^2)
(No)(wavelength)=(Nn)(new wavelength)
deltaU -deltaW

45. energy of a photon if wavelength is known
V+IR
AV=(A2)(V2)
J= Ft
hc/wavelength

46. formula for power with Voltage and resistance
n(Cv)(deltaT)
V = (Vo) + at
L -LCostheta
(V^2)/R

47. formula for impulse involving momentum
(No)(wavelength)=(Nn)(new wavelength)
2Pi * sqrt(l/g)
mV -m(Vo)
delta x = (Vo)t + .5at^2

48. adibatic
L -LCostheta
(Di)/(Do) or (Hi)/(Ho)
no heat flow
h(Fo)

49. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
.5CV^2 or .5 Q^2/C or .5QV
E/B
(I^2)RT

50. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
e=mc^2
.5KA^2
Joules/Columb