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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. EMF of a battery having internal resistance R
sqrt(T/(m/))
deltaU -deltaW
V+IR
qV

2. heat during a cyclic process (net heat)
roegh
(1/Do) + (1/Di) = (1/f)
inelastic collision
deltaU -deltaW

3. velocity of an electrion as it exitws from the hole
roegh
-KA
qrB/m
1/4wavelength

4. formula for finding the work function of a metal if the cutoff frequency is known
h(Fo)
hc/wavelength
(1/Do) + (1/Di) = (1/f)
(V^2)/r

5. snells law
KQ/r
nSintheta=nsintheta
(Patm) + (Pgauge)
.5CV^2 or .5 Q^2/C or .5QV

6. isothermal
(hc/wavelength)=h(Fo) +(Vs)
pL/A
V+IR
no temp change

7. change in internal energy during a cyclic process
qrB/m
0
(EMF)Rt/10
qE

8. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
(EMF)Rt/10
1/2wavelength
0

9. heat during an isometric process
n(Cv)(deltaT)
constant pressure
roegh
hc/wavelength

10. isobaric
constant pressure
(EMF)Rt/10
m(v^2)/qvB
1/2wavelength

11. forgotten power equation
opposite motion
FV
h/mv
.5mV^2 + .5KA^2

12. the force on a charge moving parallel to a magnetic field
sqrt(3KT/m)
no force (right hand rule)
VI
(Patm) + (Pgauge)

13. heat required to melt a substance
1/4wavelength
sqrt(T/(m/))
(hc/wavelength)=h(Fo) +(Vs)
M(Lf)

14. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
BA
((Th) -(Tl))/(Th)
(EMF)Rt/10
e=mc^2

15. the electric force between two objects of charge Q
deltaU -deltaW
net work = delta K
K |q||Q|/r^2
G M/((d/2)^2)

16. adibatic
BA
constant pressure
no heat flow
pL/A

17. formula for torque
h(Fo)
F/A
rF
KI/r

18. force of gravity between two objects of mass m
GM*M/(r^2)
Ed=V
.5mV^2 + .5KA^2
M(Lf)

19. formula for the wavelength (debroglie wavelength) of a moving particle
nSintheta=nsintheta
h/mv
BA
(EMF)Rt/10

20. type of collision where K is not conserved
.5mV^2 + .5KA^2
Ed=V
inelastic collision
no heat flow

21. force a charge in a Bfield
constant pressure
qE
constant volume
qVB

22. formula for critical angle
(N2)/(N1)
((Th) -(Tl))/(Th)
(No)(wavelength)=(Nn)(new wavelength)
K |q||Q|/r^2

23. what direction is friction?
((Th) -(Tl))/(Th)
d/2
F/A
opposite motion

24. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
V+IR
mV -m(Vo)
V^2=(Vo)^2 +2a*change in x
G M/((d/2)^2)

25. formula for finding the momentum of a photon
Joules/Columb
(Di)/(Do) or (Hi)/(Ho)
h/wavelength
V^2=(Vo)^2 +2a*change in x

26. formula to find the gauge pressure at the bottom of a pool
rF
roegh
deltaU -deltaW
BLv

27. force of friction
(Fn)(mu)
(No)(wavelength)=(Nn)(new wavelength)
.5KA^2
qVB

28. formula for efficiency not using work out
.5mV^2 + .5KA^2
constant pressure
((Qin) -(Qout))/(Qin)
perfectly inelastic collision

29. formula for power with current and resistance
BLv
mgCostheta(mu)d
(I^2)R
deltaU -deltaW

30. energy of a photon if wavelength is known
d/2
hc/wavelength
roeVg
(V^2)/R

31. first kinematic
constant volume
mgCostheta(mu)d
2Pi * sqrt(l/g)
V = (Vo) + at

32. natural frequency of an open tube of length L
-KA
1/2wavelength
(Patm) + (Pgauge)
net work = delta K

33. type of collision where objects stick togerther
.5CV^2 or .5 Q^2/C or .5QV
qE
perfectly inelastic collision
inelastic collision

34. formula for impluse involving time
J= Ft
K |q||Q|/r^2
Ed=V
(EMF)Rt/10

35. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
qV
(V^2)/r
h/mv
(I^2)R

36. formula for change in internal energy in a cosnstat volume PV process
(3/2)nRdeltaT
d/2
L -LCostheta
M(Lf)

37. formula for impulse involving momentum
.5mV^2 + .5KA^2
no heat flow
mV -m(Vo)
deltaU = deltaQ + deltaW

38. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
.5KA^2
(V^2)/R
qVB
(I^2)RT

39. electric field in a distance r from a charge
constant pressure
k|Q|/r^2
perfectly inelastic collision
1/4wavelength

40. radius of curvature of a charged particle as it enters a uniform magnetic field
m(v^2)/qvB
pL/A
(3/2)nRdeltaT
nSintheta=nsintheta

41. formula relating voltage and electric field
Ed=V
sqrt(3KT/m)
net work = delta K
pL/A

42. the force on a charge in an electric field
qE
hc/wavelength
Joules/Columb
GM*M/(r^2)

43. equation for the first law of thermodynamics
deltaU = deltaQ + deltaW
K |q||Q|/r^2
constant pressure
(Patm) + (Pgauge)

44. formula for power with current and voltage
.5mV^2 + .5KA^2
VI
deltaU = deltaQ + deltaW
(Wnet)/(Qin)

45. formula for buoyant force
roeVg
nSintheta=nsintheta
mgCostheta(mu)d
(V^2)/r

46. second kinematic
qVB
delta x = (Vo)t + .5at^2
-KA
Joules/Columb

47. velocity of a molecule of gas
sqrt(3KT/m)
(Wnet)/(Qin)
no heat flow
E/B

48. equation of continuity
AV=(A2)(V2)
(hc/wavelength)=h(Fo) +(Vs)
BA
(Di)/(Do) or (Hi)/(Ho)

49. formula for power with Voltage and resistance
k|Q|/r^2
net work = delta K
BA
(V^2)/R

50. third kinematic
V^2=(Vo)^2 +2a*change in x
.5CV^2 or .5 Q^2/C or .5QV
(Wnet)/(Qin)
(V^2)/r