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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. change in internal energy during a cyclic process
0
FV
KI/r
V^2=(Vo)^2 +2a*change in x

2. formula for centripetal acceleration
(V^2)/r
1/((1/C)+(1/C)..........)
joules/second
(N2)/(N1)

3. hooke's law force of a spring
qVB
KI/r
-KA
E/B

4. force of gravity between two objects of mass m
GM*M/(r^2)
(V^2)/R
m(v^2)/qvB
e=mc^2

5. formula for critical angle
hc/wavelength
((Qin) -(Qout))/(Qin)
(N2)/(N1)
no force (right hand rule)

6. formula for buoyant force
2nt=mwavelength
roeVg
(Di)/(Do) or (Hi)/(Ho)
(Patm) + (Pgauge)

7. velocity of a molecule of gas
constant volume
net work = delta K
F/A
sqrt(3KT/m)

8. formula for energy of a spring mass when spring is at maximum displacement
K |q||Q|/r^2
1/2wavelength
.5KA^2
Ed=V

9. the units of power other than watts
constant pressure
F/A
joules/second
J= Ft

10. snells law
Ed=V
.5KA^2
nSintheta=nsintheta
hc/wavelength

11. equation of continuity
V+IR
no heat flow
AV=(A2)(V2)
1/4wavelength

12. formula for impluse involving time
KI/r
J= Ft
h/wavelength
Columbs/second

13. formula for period of a pendulum
d/2
2Pi * sqrt(l/g)
(N2)/(N1)
.5KA^2

14. formula for efficiency of a heat engine using work out
constant pressure
V^2=(Vo)^2 +2a*change in x
(EMF)Rt/10
(Wnet)/(Qin)

15. formula for finding the magnetic field a distance r from a current carrying wire
pL/A
MC(deltaT)
(hc/wavelength)=h(Fo) +(Vs)
KI/r

16. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
AV=(A2)(V2)
qV
constant volume
(hc/wavelength)=h(Fo) +(Vs)

17. formula to find the absoluate pressure at the bottom of a pool
(I^2)R
(Patm) + (Pgauge)
Ed=V
Joules/Columb

18. velocity of an electrion as it exitws from the hole
L -LCostheta
inelastic collision
qrB/m
Ed=V

19. energy of a photon if wavelength is known
hc/wavelength
KI/r
qE
Joules/Columb

20. formula for impulse involving momentum
(Wnet)/(Qin)
no temp change
mV -m(Vo)
frequency never changes for light problems

21. lens/mirror equation
J= Ft
(1/Do) + (1/Di) = (1/f)
VI
KQ/r

22. formula for change in internal energy in a cosnstat volume PV process
m(v^2)/qvB
delta x = (Vo)t + .5at^2
(3/2)nRdeltaT
(V^2)/R

23. formula for constructive interference in a thin membrane with two phase changes
no heat flow
E/B
n(Cv)(deltaT)
2nt=mwavelength

24. formula for power with current and voltage
VI
(I^2)RT
roeVg
no temp change

25. natural frequency of a closed tube of length L
-KA
constant volume
sqrt(T/(m/))
1/4wavelength

26. forgotten power equation
joules/second
frequency never changes for light problems
GM*M/(r^2)
FV

27. formula equating energy and mass
((Qin) -(Qout))/(Qin)
perfectly inelastic collision
e=mc^2
(Wnet)/(Qin)

28. heat during a cyclic process (net heat)
deltaU -deltaW
sqrt(3KT/m)
h/wavelength
mgCostheta(mu)d

29. formula for torque
1/2wavelength
sqrt(3KT/m)
KI/r
rF

30. electric field in a distance r from a charge
k|Q|/r^2
L -LCostheta
constant pressure
frequency never changes for light problems

31. formula to find the gauge pressure at the bottom of a pool
roegh
k|Q|/r^2
(Wnet)/(Qin)
perfectly inelastic collision

32. heat required to melt a substance
E/B
M(Lf)
Q=CV
(V^2)/R

33. the force on a charge in an electric field
qrB/m
constant volume
F/A
qE

34. equation for the first law of thermodynamics
hc/wavelength
(No)(wavelength)=(Nn)(new wavelength)
deltaU = deltaQ + deltaW
sqrt(3KT/m)

35. magnification equation
roegh
(V^2)/R
(Di)/(Do) or (Hi)/(Ho)
KI/r

36. the electric force between two objects of charge Q
elastic collision
0
K |q||Q|/r^2
(Di)/(Do) or (Hi)/(Ho)

37. the units of current other than amps
Columbs/second
1/((1/C)+(1/C)..........)
constant volume
1/4wavelength

38. new frequency of light as it enters a new substance
frequency never changes for light problems
no temp change
KI/r
perfectly inelastic collision

39. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
constant volume
(EMF)Rt/10
roeVg
(I^2)RT

40. type of collision where K is not conserved
inelastic collision
roeVg
hc/wavelength
2nt=mwavelength

41. heat required to change temperature of a substance
(Patm) + (Pgauge)
MC(deltaT)
Q=CV
V = (Vo) + at

42. total capacitance of capacitors in series
joules/second
(hc/wavelength)=h(Fo) +(Vs)
1/((1/C)+(1/C)..........)
no temp change

43. units for voltage other than volts
M(Lf)
Joules/Columb
BLv
(Di)/(Do) or (Hi)/(Ho)

44. formula for constructive interference in a diffraction grating
MC(deltaT)
dSintheta=mwavelength
no force (right hand rule)
frequency never changes for light problems

45. EMF of a battery having internal resistance R
V+IR
deltaU -deltaW
constant volume
joules/second

46. heat during an isometric process
n(Cv)(deltaT)
inelastic collision
opposite motion
e=mc^2

47. formula for the wavelength (debroglie wavelength) of a moving particle
(Fn)(mu)
h/mv
mgCostheta(mu)d
.5mV^2 + .5KA^2

48. the force on a charge moving parallel to a magnetic field
qrB/m
(Patm) + (Pgauge)
constant pressure
no force (right hand rule)

49. force a charge in a Bfield
roeVg
qVB
V+IR
m(v^2)/qvB

50. new wavelength of light as it enters a new substance
(No)(wavelength)=(Nn)(new wavelength)
M(Lf)
h/wavelength
(Fn)(mu)