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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 impluse involving time
J= Ft
no force (right hand rule)
KQ/r
1/((1/C)+(1/C)..........)

2. the force on a charge moving parallel to a magnetic field
AV=(A2)(V2)
no heat flow
(I^2)R
no force (right hand rule)

3. formula for constructive interference in a diffraction grating
pL/A
h(Fo)
0
dSintheta=mwavelength

4. formula for centripetal acceleration
(V^2)/r
Q=CV
.5KA^2
Joules/Columb

5. what direction is friction?
opposite motion
Columbs/second
rF
((Th) -(Tl))/(Th)

6. force of gravity between two objects of mass m
GM*M/(r^2)
h(Fo)
KI/r
BLv

7. electric field in a distance r from a charge
qE
F/A
mgCostheta(mu)d
k|Q|/r^2

8. isobaric
(Patm) + (Pgauge)
constant pressure
M(Lf)
(EMF)Rt/10

9. formula to find the gauge pressure at the bottom of a pool
roegh
(No)(wavelength)=(Nn)(new wavelength)
nSintheta=nsintheta
mgCostheta(mu)d

10. velocity of an electrion as it exitws from the hole
no force (right hand rule)
pL/A
qrB/m
Ed=V

11. type of collision where K is not conserved
F/A
qV
Ed=V
inelastic collision

12. units for voltage other than volts
KI/r
.5KA^2
elastic collision
Joules/Columb

13. magnification equation
(N2)/(N1)
(Di)/(Do) or (Hi)/(Ho)
F/A
net work = delta K

14. formula for period of a pendulum
V+IR
2Pi * sqrt(l/g)
mgCostheta(mu)d
L -LCostheta

15. the units of power other than watts
joules/second
h/mv
M(Lf)
E/B

16. formula for height of the block (at the start of a pendulum string) in terms of theta and L
m(v^2)/qvB
roegh
L -LCostheta
dSintheta=mwavelength

17. heat during a cyclic process (net heat)
(Di)/(Do) or (Hi)/(Ho)
delta x = (Vo)t + .5at^2
mgCostheta(mu)d
deltaU -deltaW

18. 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)
(V^2)/R
V^2=(Vo)^2 +2a*change in x
qrB/m

19. formula for efficiency not using work out
2Pi * sqrt(l/g)
(EMF)Rt/10
.5mV^2 + .5KA^2
((Qin) -(Qout))/(Qin)

20. velocity of waves on a string if tension is known
m(v^2)/qvB
AV=(A2)(V2)
sqrt(T/(m/))
(Wnet)/(Qin)

21. force of friction
frequency never changes for light problems
0
(Fn)(mu)
roegh

22. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(Di)/(Do) or (Hi)/(Ho)
(hc/wavelength)=h(Fo) +(Vs)
(3/2)nRdeltaT
qE

23. new wavelength of light as it enters a new substance
BA
(No)(wavelength)=(Nn)(new wavelength)
constant volume
delta x = (Vo)t + .5at^2

24. formula for power with Voltage and resistance
(Fn)(mu)
(V^2)/R
.5KA^2
(1/Do) + (1/Di) = (1/f)

25. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
dSintheta=mwavelength
Joules/Columb
(Di)/(Do) or (Hi)/(Ho)

26. formula for critical angle
2nt=mwavelength
(N2)/(N1)
perfectly inelastic collision
qV

27. natural frequency of an open tube of length L
sqrt(T/(m/))
pL/A
1/2wavelength
(Wnet)/(Qin)

28. formula for finding the work function of a metal if the cutoff frequency is known
(I^2)R
h(Fo)
.5mV^2 + .5KA^2
2nt=mwavelength

29. second kinematic
(No)(wavelength)=(Nn)(new wavelength)
nSintheta=nsintheta
L -LCostheta
delta x = (Vo)t + .5at^2

30. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
elastic collision
(EMF)Rt/10
J= Ft
.5CV^2 or .5 Q^2/C or .5QV

31. snells law
.5KA^2
hc/wavelength
constant pressure
nSintheta=nsintheta

32. natural frequency of a closed tube of length L
1/4wavelength
MC(deltaT)
elastic collision
(Di)/(Do) or (Hi)/(Ho)

33. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
inelastic collision
n(Cv)(deltaT)
E/B
rF

34. isometric
KQ/r
constant volume
perfectly inelastic collision
BLv

35. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
Ed=V
E/B
qrB/m

36. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
.5mV^2 + .5KA^2
qV
no force (right hand rule)
(V^2)/R

37. EMF of a battery having internal resistance R
V+IR
mV -m(Vo)
frequency never changes for light problems
VI

38. heat during an isometric process
L -LCostheta
n(Cv)(deltaT)
(Patm) + (Pgauge)
sqrt(3KT/m)

39. formula for power with current and voltage
VI
opposite motion
(I^2)R
h/wavelength

40. formula for the wavelength (debroglie wavelength) of a moving particle
nSintheta=nsintheta
.5KA^2
Ed=V
h/mv

41. the electric force between two objects of charge Q
Ed=V
F/A
Columbs/second
K |q||Q|/r^2

42. type of collision where objects stick togerther
m(v^2)/qvB
no temp change
(No)(wavelength)=(Nn)(new wavelength)
perfectly inelastic collision

43. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
sqrt(3KT/m)
h(Fo)
-KA

44. heat required to change temperature of a substance
FV
(Fn)(mu)
MC(deltaT)
opposite motion

45. equation for the first law of thermodynamics
Columbs/second
deltaU = deltaQ + deltaW
deltaU -deltaW
E/B

46. velocity of a molecule of gas
deltaU = deltaQ + deltaW
sqrt(3KT/m)
((Qin) -(Qout))/(Qin)
E/B

47. formula for finding the momentum of a photon
F/A
K |q||Q|/r^2
e=mc^2
h/wavelength

48. equation of continuity
rF
AV=(A2)(V2)
MC(deltaT)
Ed=V

49. heat required to melt a substance
M(Lf)
mgCostheta(mu)d
joules/second
.5KA^2

50. hooke's law force of a spring
Ed=V
1/2wavelength
perfectly inelastic collision
-KA