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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. magnification equation
.5mV^2 + .5KA^2
(V^2)/r
.5KA^2
(Di)/(Do) or (Hi)/(Ho)

2. hooke's law force of a spring
roegh
-KA
Columbs/second
V+IR

3. formula for finding magnetic flux
e=mc^2
M(Lf)
perfectly inelastic collision
BA

4. heat required to change temperature of a substance
(Wnet)/(Qin)
MC(deltaT)
(N2)/(N1)
(Fn)(mu)

5. formula relating voltage and electric field
Ed=V
Joules/Columb
K |q||Q|/r^2
deltaU = deltaQ + deltaW

6. heat during a cyclic process (net heat)
E/B
Columbs/second
deltaU -deltaW
F/A

7. formula for Carnot efficiency
F/A
roegh
((Th) -(Tl))/(Th)
h/mv

8. radius of curvature of a charged particle as it enters a uniform magnetic field
M(Lf)
KQ/r
m(v^2)/qvB
no force (right hand rule)

9. formula for efficiency not using work out
-KA
((Qin) -(Qout))/(Qin)
.5mV^2 + .5KA^2
FV

10. isothermal
no temp change
pL/A
deltaU -deltaW
(Fn)(mu)

11. forgotten power equation
BA
h/mv
FV
(Patm) + (Pgauge)

12. formula for finding the magnetic field a distance r from a current carrying wire
(1/Do) + (1/Di) = (1/f)
sqrt(T/(m/))
(Patm) + (Pgauge)
KI/r

13. change in internal energy during a cyclic process
1/((1/C)+(1/C)..........)
Ed=V
hc/wavelength
0

14. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
dSintheta=mwavelength
sqrt(3KT/m)
2nt=mwavelength

15. velocity of a molecule of gas
((Qin) -(Qout))/(Qin)
G M/((d/2)^2)
(I^2)R
sqrt(3KT/m)

16. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
.5mV^2 + .5KA^2
(I^2)RT
(hc/wavelength)=h(Fo) +(Vs)
(No)(wavelength)=(Nn)(new wavelength)

17. formula for power with current and resistance
(I^2)R
VI
hc/wavelength
(3/2)nRdeltaT

18. what direction is friction?
perfectly inelastic collision
(EMF)Rt/10
G M/((d/2)^2)
opposite motion

19. formula for power with Voltage and resistance
m(v^2)/qvB
delta x = (Vo)t + .5at^2
dSintheta=mwavelength
(V^2)/R

20. formula for height of the block (at the start of a pendulum string) in terms of theta and L
(EMF)Rt/10
V = (Vo) + at
L -LCostheta
-KA

21. work energy theorum
n(Cv)(deltaT)
k|Q|/r^2
(N2)/(N1)
net work = delta K

22. third kinematic
Columbs/second
V^2=(Vo)^2 +2a*change in x
hc/wavelength
qVB

23. formula for torque
rF
perfectly inelastic collision
(Fn)(mu)
qE

24. isometric
constant volume
(Fn)(mu)
qrB/m
1/4wavelength

25. second kinematic
deltaU -deltaW
delta x = (Vo)t + .5at^2
(Fn)(mu)
(I^2)R

26. velocity of an electrion as it exitws from the hole
(Di)/(Do) or (Hi)/(Ho)
mV -m(Vo)
sqrt(3KT/m)
qrB/m

27. natural frequency of a closed tube of length L
qVB
1/4wavelength
roeVg
(EMF)Rt/10

28. formula for centripetal acceleration
(V^2)/r
hc/wavelength
qVB
constant volume

29. pressure
qVB
h/wavelength
V = (Vo) + at
F/A

30. voltage induced in a rod moving through a uniform magnetic field
(hc/wavelength)=h(Fo) +(Vs)
qrB/m
qVB
BLv

31. heat during an isometric process
L -LCostheta
0
n(Cv)(deltaT)
G M/((d/2)^2)

32. formula for finding the momentum of a photon
.5KA^2
h/wavelength
0
perfectly inelastic collision

33. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
pL/A
elastic collision
d/2

34. equation of continuity
.5mV^2 + .5KA^2
no force (right hand rule)
(Di)/(Do) or (Hi)/(Ho)
AV=(A2)(V2)

35. velocity of waves on a string if tension is known
sqrt(T/(m/))
(V^2)/r
FV
1/4wavelength

36. formula for impulse involving momentum
mV -m(Vo)
(I^2)R
perfectly inelastic collision
delta x = (Vo)t + .5at^2

37. formula equating energy and mass
BA
sqrt(3KT/m)
KI/r
e=mc^2

38. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
Joules/Columb
(V^2)/R
KQ/r
(EMF)Rt/10

39. formula for efficiency of a heat engine using work out
.5CV^2 or .5 Q^2/C or .5QV
nSintheta=nsintheta
(Wnet)/(Qin)
Q=CV

40. force of gravity between two objects of mass m
GM*M/(r^2)
sqrt(3KT/m)
no force (right hand rule)
sqrt(T/(m/))

41. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
no force (right hand rule)
G M/((d/2)^2)
qVB
(No)(wavelength)=(Nn)(new wavelength)

42. heat required to melt a substance
Ed=V
M(Lf)
V = (Vo) + at
roeVg

43. resistance of a wire
pL/A
V+IR
perfectly inelastic collision
(V^2)/R

44. units for voltage other than volts
Joules/Columb
(3/2)nRdeltaT
(I^2)RT
qE

45. new frequency of light as it enters a new substance
m(v^2)/qvB
M(Lf)
frequency never changes for light problems
(V^2)/r

46. lens/mirror equation
roegh
(1/Do) + (1/Di) = (1/f)
(I^2)RT
h/mv

47. force of frction on an incline
delta x = (Vo)t + .5at^2
mgCostheta(mu)d
pL/A
GM*M/(r^2)

48. snells law
(I^2)R
h/mv
nSintheta=nsintheta
d/2

49. the electric force between two objects of charge Q
K |q||Q|/r^2
sqrt(3KT/m)
(V^2)/r
KQ/r

50. energy of a photon if wavelength is known
nSintheta=nsintheta
hc/wavelength
no heat flow
KQ/r