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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 torque
Q=CV
rF
Joules/Columb
(Fn)(mu)

2. electric field in a distance r from a charge
k|Q|/r^2
mV -m(Vo)
qrB/m
Joules/Columb

3. work energy theorum
net work = delta K
dSintheta=mwavelength
AV=(A2)(V2)
qE

4. natural frequency of an open tube of length L
1/2wavelength
Q=CV
Joules/Columb
qV

5. the units of current other than amps
E/B
dSintheta=mwavelength
Columbs/second
m(v^2)/qvB

6. units for voltage other than volts
deltaU = deltaQ + deltaW
.5KA^2
Joules/Columb
elastic collision

7. new frequency of light as it enters a new substance
no heat flow
n(Cv)(deltaT)
BA
frequency never changes for light problems

8. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
Columbs/second
V^2=(Vo)^2 +2a*change in x
no temp change
G M/((d/2)^2)

9. velocity of waves on a string if tension is known
KQ/r
(V^2)/r
sqrt(T/(m/))
deltaU -deltaW

10. formula for impulse involving momentum
mV -m(Vo)
opposite motion
h/mv
mgCostheta(mu)d

11. formula for buoyant force
h(Fo)
GM*M/(r^2)
roeVg
((Qin) -(Qout))/(Qin)

12. electric potential a distance r from a charge
M(Lf)
(1/Do) + (1/Di) = (1/f)
KQ/r
FV

13. change in internal energy during a cyclic process
E/B
0
h(Fo)
V = (Vo) + at

14. energy of a photon if wavelength is known
opposite motion
hc/wavelength
Q=CV
deltaU -deltaW

15. formula for impluse involving time
.5CV^2 or .5 Q^2/C or .5QV
J= Ft
(No)(wavelength)=(Nn)(new wavelength)
(Patm) + (Pgauge)

16. formula for height of the block (at the start of a pendulum string) in terms of theta and L
pL/A
L -LCostheta
e=mc^2
E/B

17. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
Joules/Columb
roegh
dSintheta=mwavelength
E/B

18. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
h(Fo)
(EMF)Rt/10
V = (Vo) + at
E/B

19. the force on a charge moving parallel to a magnetic field
hc/wavelength
1/4wavelength
no force (right hand rule)
-KA

20. isometric
roeVg
constant volume
Columbs/second
h(Fo)

21. formula for finding the work function of a metal if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
h(Fo)
e=mc^2
roeVg

22. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
(Wnet)/(Qin)
pL/A
sqrt(3KT/m)

23. formula to find the gauge pressure at the bottom of a pool
V+IR
(EMF)Rt/10
.5KA^2
roegh

24. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
k|Q|/r^2
pL/A
qVB
qV

25. formula for power with current and resistance
(I^2)R
rF
(I^2)RT
sqrt(T/(m/))

26. formula for power with current and voltage
KQ/r
VI
deltaU = deltaQ + deltaW
constant pressure

27. snells law
BA
G M/((d/2)^2)
nSintheta=nsintheta
(Wnet)/(Qin)

28. magnification equation
(V^2)/r
(Di)/(Do) or (Hi)/(Ho)
(I^2)RT
net work = delta K

29. heat required to change temperature of a substance
qV
Columbs/second
MC(deltaT)
M(Lf)

30. third kinematic
h/mv
V^2=(Vo)^2 +2a*change in x
(V^2)/R
deltaU = deltaQ + deltaW

31. force of frction on an incline
BLv
J= Ft
mgCostheta(mu)d
pL/A

32. lens/mirror equation
J= Ft
(1/Do) + (1/Di) = (1/f)
V = (Vo) + at
.5KA^2

33. formula for efficiency not using work out
((Qin) -(Qout))/(Qin)
FV
e=mc^2
(Patm) + (Pgauge)

34. pressure
.5CV^2 or .5 Q^2/C or .5QV
mV -m(Vo)
F/A
h/wavelength

35. heat during a cyclic process (net heat)
k|Q|/r^2
0
rF
deltaU -deltaW

36. natural frequency of a closed tube of length L
.5CV^2 or .5 Q^2/C or .5QV
1/4wavelength
no temp change
1/((1/C)+(1/C)..........)

37. adibatic
.5CV^2 or .5 Q^2/C or .5QV
MC(deltaT)
no heat flow
net work = delta K

38. new wavelength of light as it enters a new substance
no temp change
(No)(wavelength)=(Nn)(new wavelength)
(Wnet)/(Qin)
mgCostheta(mu)d

39. isobaric
no temp change
constant pressure
L -LCostheta
((Qin) -(Qout))/(Qin)

40. formula relating voltage and electric field
E/B
((Th) -(Tl))/(Th)
Ed=V
Joules/Columb

41. the electric force between two objects of charge Q
e=mc^2
.5KA^2
K |q||Q|/r^2
1/((1/C)+(1/C)..........)

42. formula for power with Voltage and resistance
(N2)/(N1)
((Qin) -(Qout))/(Qin)
BLv
(V^2)/R

43. formula to find the absoluate pressure at the bottom of a pool
elastic collision
(Patm) + (Pgauge)
nSintheta=nsintheta
(1/Do) + (1/Di) = (1/f)

44. formula for finding the magnetic field a distance r from a current carrying wire
(I^2)RT
roegh
elastic collision
KI/r

45. forgotten power equation
FV
sqrt(3KT/m)
(hc/wavelength)=h(Fo) +(Vs)
Joules/Columb

46. formula for centripetal acceleration
(V^2)/r
(1/Do) + (1/Di) = (1/f)
1/2wavelength
G M/((d/2)^2)

47. velocity of a molecule of gas
(hc/wavelength)=h(Fo) +(Vs)
m(v^2)/qvB
sqrt(3KT/m)
opposite motion

48. resistance of a wire
MC(deltaT)
.5KA^2
pL/A
(Patm) + (Pgauge)

49. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
h(Fo)
(hc/wavelength)=h(Fo) +(Vs)
elastic collision
1/((1/C)+(1/C)..........)

50. equation of continuity
(I^2)R
L -LCostheta
no force (right hand rule)
AV=(A2)(V2)