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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. units for voltage other than volts
GM*M/(r^2)
qVB
Joules/Columb
h(Fo)

2. formula for finding the momentum of a photon
(Fn)(mu)
1/4wavelength
h/wavelength
deltaU -deltaW

3. resistance of a wire
E/B
elastic collision
nSintheta=nsintheta
pL/A

4. second kinematic
V = (Vo) + at
delta x = (Vo)t + .5at^2
constant volume
Ed=V

5. formula for buoyant force
((Qin) -(Qout))/(Qin)
inelastic collision
roeVg
pL/A

6. velocity of an electrion as it exitws from the hole
(3/2)nRdeltaT
qrB/m
deltaU = deltaQ + deltaW
no temp change

7. formula for the wavelength (debroglie wavelength) of a moving particle
qV
elastic collision
h/wavelength
h/mv

8. velocity of a molecule of gas
V^2=(Vo)^2 +2a*change in x
(Wnet)/(Qin)
sqrt(3KT/m)
constant pressure

9. new wavelength of light as it enters a new substance
(V^2)/r
(No)(wavelength)=(Nn)(new wavelength)
n(Cv)(deltaT)
constant pressure

10. formula for power with current and resistance
qrB/m
sqrt(T/(m/))
(I^2)R
k|Q|/r^2

11. snells law
nSintheta=nsintheta
sqrt(3KT/m)
AV=(A2)(V2)
(3/2)nRdeltaT

12. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
-KA
GM*M/(r^2)
k|Q|/r^2
.5mV^2 + .5KA^2

13. EMF of a battery having internal resistance R
V+IR
qV
m(v^2)/qvB
.5mV^2 + .5KA^2

14. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
joules/second
(hc/wavelength)=h(Fo) +(Vs)
(Fn)(mu)
(V^2)/R

15. change in internal energy during a cyclic process
qVB
frequency never changes for light problems
0
sqrt(T/(m/))

16. radius of curvature of a charged particle as it enters a uniform magnetic field
frequency never changes for light problems
m(v^2)/qvB
GM*M/(r^2)
M(Lf)

17. heat during a cyclic process (net heat)
Q=CV
rF
deltaU -deltaW
(Wnet)/(Qin)

18. force a charge in a Bfield
qVB
MC(deltaT)
(Fn)(mu)
KI/r

19. formula to find the absoluate pressure at the bottom of a pool
F/A
(Wnet)/(Qin)
(N2)/(N1)
(Patm) + (Pgauge)

20. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
(I^2)RT
KQ/r
net work = delta K

21. heat required to change temperature of a substance
.5mV^2 + .5KA^2
.5CV^2 or .5 Q^2/C or .5QV
V+IR
MC(deltaT)

22. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
qV
opposite motion
G M/((d/2)^2)
1/((1/C)+(1/C)..........)

23. formula to find the gauge pressure at the bottom of a pool
pL/A
roegh
M(Lf)
FV

24. forgotten power equation
FV
(I^2)RT
(hc/wavelength)=h(Fo) +(Vs)
Ed=V

25. 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
(I^2)R
nSintheta=nsintheta
m(v^2)/qvB

26. the units of power other than watts
h/mv
joules/second
1/((1/C)+(1/C)..........)
deltaU -deltaW

27. natural frequency of a closed tube of length L
(Di)/(Do) or (Hi)/(Ho)
pL/A
sqrt(T/(m/))
1/4wavelength

28. formula for efficiency not using work out
G M/((d/2)^2)
V+IR
K |q||Q|/r^2
((Qin) -(Qout))/(Qin)

29. heat required to melt a substance
M(Lf)
constant volume
hc/wavelength
deltaU = deltaQ + deltaW

30. force of frction on an incline
e=mc^2
E/B
((Qin) -(Qout))/(Qin)
mgCostheta(mu)d

31. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
(V^2)/r
pL/A
(EMF)Rt/10
qrB/m

32. equation of continuity
AV=(A2)(V2)
(Fn)(mu)
sqrt(T/(m/))
inelastic collision

33. formula for efficiency of a heat engine using work out
(Wnet)/(Qin)
(I^2)R
1/2wavelength
.5mV^2 + .5KA^2

34. the force on a charge moving parallel to a magnetic field
no force (right hand rule)
(EMF)Rt/10
e=mc^2
roegh

35. formula equating energy and mass
e=mc^2
deltaU = deltaQ + deltaW
mV -m(Vo)
deltaU -deltaW

36. what direction is friction?
opposite motion
h/wavelength
qV
qVB

37. formula for critical angle
Ed=V
(N2)/(N1)
opposite motion
(Di)/(Do) or (Hi)/(Ho)

38. lens/mirror equation
Q=CV
(1/Do) + (1/Di) = (1/f)
E/B
joules/second

39. total capacitance of capacitors in series
Joules/Columb
(I^2)R
FV
1/((1/C)+(1/C)..........)

40. formula for Carnot efficiency
KQ/r
((Th) -(Tl))/(Th)
(EMF)Rt/10
mgCostheta(mu)d

41. formula for impulse involving momentum
mV -m(Vo)
1/2wavelength
(I^2)RT
k|Q|/r^2

42. force of friction
(Fn)(mu)
h/wavelength
V+IR
constant pressure

43. energy of a photon if wavelength is known
nSintheta=nsintheta
-KA
hc/wavelength
Joules/Columb

44. natural frequency of an open tube of length L
K |q||Q|/r^2
1/2wavelength
V^2=(Vo)^2 +2a*change in x
.5mV^2 + .5KA^2

45. the units of current other than amps
perfectly inelastic collision
Columbs/second
V = (Vo) + at
KQ/r

46. formula for power with current and voltage
VI
h/wavelength
K |q||Q|/r^2
1/((1/C)+(1/C)..........)

47. the electric force between two objects of charge Q
.5CV^2 or .5 Q^2/C or .5QV
K |q||Q|/r^2
sqrt(T/(m/))
1/4wavelength

48. adibatic
deltaU = deltaQ + deltaW
(1/Do) + (1/Di) = (1/f)
no heat flow
V = (Vo) + at

49. formula for finding magnetic flux
rF
.5CV^2 or .5 Q^2/C or .5QV
BA
roeVg

50. formula for energy of a spring mass when spring is at maximum displacement
V+IR
J= Ft
G M/((d/2)^2)
.5KA^2