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AP Physics Formulas

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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. heat during an isometric process
(I^2)R
(N2)/(N1)
n(Cv)(deltaT)
AV=(A2)(V2)

2. force of friction
(Fn)(mu)
(Wnet)/(Qin)
sqrt(3KT/m)
F/A

3. focal length of a mirror with radius d
L -LCostheta
(hc/wavelength)=h(Fo) +(Vs)
d/2
no heat flow

4. formula for the wavelength (debroglie wavelength) of a moving particle
h/mv
L -LCostheta
d/2
rF

5. velocity of a charge traveling at a constant veloc ity through crossed E and B fields
perfectly inelastic collision
E/B
F/A
BLv

6. formula for finding magnetic flux
qVB
elastic collision
L -LCostheta
BA

7. hooke's law force of a spring
2Pi * sqrt(l/g)
-KA
deltaU -deltaW
elastic collision

8. the electric force between two objects of charge Q
constant volume
(V^2)/R
.5mV^2 + .5KA^2
K |q||Q|/r^2

9. formula for critical angle
((Qin) -(Qout))/(Qin)
1/2wavelength
Joules/Columb
(N2)/(N1)

10. new frequency of light as it enters a new substance
(Di)/(Do) or (Hi)/(Ho)
K |q||Q|/r^2
h/mv
frequency never changes for light problems

11. isobaric
no temp change
delta x = (Vo)t + .5at^2
F/A
constant pressure

12. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
BA
joules/second
((Qin) -(Qout))/(Qin)
G M/((d/2)^2)

13. velocity of an electrion as it exitws from the hole
(Fn)(mu)
qrB/m
K |q||Q|/r^2
pL/A

14. forgotten power equation
opposite motion
(I^2)RT
BLv
FV

15. electric field in a distance r from a charge
k|Q|/r^2
qE
J= Ft
mV -m(Vo)

16. pressure
F/A
mgCostheta(mu)d
(Patm) + (Pgauge)
MC(deltaT)

17. formula for efficiency of a heat engine using work out
K |q||Q|/r^2
.5KA^2
delta x = (Vo)t + .5at^2
(Wnet)/(Qin)

18. total capacitance of capacitors in series
1/((1/C)+(1/C)..........)
.5mV^2 + .5KA^2
((Th) -(Tl))/(Th)
Columbs/second

19. type of collision where K is not conserved
(Patm) + (Pgauge)
(hc/wavelength)=h(Fo) +(Vs)
KI/r
inelastic collision

20. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
d/2
(V^2)/r
(Patm) + (Pgauge)
(EMF)Rt/10

21. units for voltage other than volts
BLv
V+IR
K |q||Q|/r^2
Joules/Columb

22. formula for height of the block (at the start of a pendulum string) in terms of theta and L
constant pressure
net work = delta K
k|Q|/r^2
L -LCostheta

23. formula to find the absoluate pressure at the bottom of a pool
(Patm) + (Pgauge)
KI/r
elastic collision
mgCostheta(mu)d

24. natural frequency of a closed tube of length L
h(Fo)
1/4wavelength
no heat flow
mgCostheta(mu)d

25. the units of current other than amps
mgCostheta(mu)d
mV -m(Vo)
Columbs/second
FV

26. energy stored in a capacitor
h/mv
h(Fo)
.5CV^2 or .5 Q^2/C or .5QV
(N2)/(N1)

27. work energy theorum
V = (Vo) + at
net work = delta K
AV=(A2)(V2)
qE

28. radius of curvature of a charged particle as it enters a uniform magnetic field
2nt=mwavelength
V+IR
m(v^2)/qvB
k|Q|/r^2

29. velocity of waves on a string if tension is known
Columbs/second
pL/A
sqrt(T/(m/))
opposite motion

30. third kinematic
1/((1/C)+(1/C)..........)
(hc/wavelength)=h(Fo) +(Vs)
(Fn)(mu)
V^2=(Vo)^2 +2a*change in x

31. formula for finding the stopping potential of a metal for a wavelength if the cutoff frequency is known
(hc/wavelength)=h(Fo) +(Vs)
-KA
KQ/r
J= Ft

32. adibatic
qrB/m
Ed=V
Joules/Columb
no heat flow

33. formula for energy of a spring mass when spring is at maximum displacement
(EMF)Rt/10
qE
(V^2)/R
.5KA^2

34. 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
no force (right hand rule)
deltaU = deltaQ + deltaW
net work = delta K

35. isothermal
h/wavelength
(V^2)/R
no temp change
qrB/m

36. force of gravity between two objects of mass m
GM*M/(r^2)
constant volume
AV=(A2)(V2)
perfectly inelastic collision

37. heat during a cyclic process (net heat)
no heat flow
deltaU -deltaW
joules/second
(I^2)R

38. formula for efficiency not using work out
AV=(A2)(V2)
(1/Do) + (1/Di) = (1/f)
((Qin) -(Qout))/(Qin)
(Wnet)/(Qin)

39. second kinematic
elastic collision
delta x = (Vo)t + .5at^2
Q=CV
m(v^2)/qvB

40. formula for buoyant force
L -LCostheta
roeVg
h(Fo)
.5mV^2 + .5KA^2

41. what direction is friction?
(1/Do) + (1/Di) = (1/f)
GM*M/(r^2)
opposite motion
no heat flow

42. formula to find the gauge pressure at the bottom of a pool
roegh
m(v^2)/qvB
GM*M/(r^2)
(N2)/(N1)

43. voltage induced in a rod moving through a uniform magnetic field
(V^2)/R
.5mV^2 + .5KA^2
qE
BLv

44. formula for centripetal acceleration
(No)(wavelength)=(Nn)(new wavelength)
GM*M/(r^2)
(V^2)/r
.5CV^2 or .5 Q^2/C or .5QV

45. resistance of a wire
qV
FV
(Di)/(Do) or (Hi)/(Ho)
pL/A

46. the units of power other than watts
G M/((d/2)^2)
joules/second
2Pi * sqrt(l/g)
k|Q|/r^2

47. formula for change in internal energy in a cosnstat volume PV process
(Di)/(Do) or (Hi)/(Ho)
qE
E/B
(3/2)nRdeltaT

48. equation for the first law of thermodynamics
(EMF)Rt/10
deltaU = deltaQ + deltaW
nSintheta=nsintheta
hc/wavelength

49. EMF of a battery having internal resistance R
AV=(A2)(V2)
VI
V+IR
(V^2)/R

50. heat required to melt a substance
(V^2)/R
dSintheta=mwavelength
M(Lf)
0