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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. heat during an isometric process
n(Cv)(deltaT)
(N2)/(N1)
deltaU -deltaW
net work = delta K

2. formula for finding the qacceleration due to gravity at the surface of a planet of mass M and diameter d
G M/((d/2)^2)
qVB
1/((1/C)+(1/C)..........)
delta x = (Vo)t + .5at^2

3. lens/mirror equation
sqrt(T/(m/))
M(Lf)
(1/Do) + (1/Di) = (1/f)
k|Q|/r^2

4. formula used to find the heat generated by a resistor after a certain amount of time if the current through the resistor is known
BA
h/mv
(I^2)RT
KQ/r

5. the force on a charge moving parallel to a magnetic field
m(v^2)/qvB
(No)(wavelength)=(Nn)(new wavelength)
hc/wavelength
no force (right hand rule)

6. heat required to melt a substance
sqrt(3KT/m)
(3/2)nRdeltaT
M(Lf)
m(v^2)/qvB

7. formula for finding the work function of a metal if the cutoff frequency is known
no force (right hand rule)
qrB/m
h(Fo)
((Qin) -(Qout))/(Qin)

8. heat required to change temperature of a substance
constant pressure
(I^2)R
MC(deltaT)
.5KA^2

9. radius of curvature of a charged particle as it enters a uniform magnetic field
(No)(wavelength)=(Nn)(new wavelength)
mgCostheta(mu)d
m(v^2)/qvB
1/4wavelength

10. electric potential a distance r from a charge
hc/wavelength
BA
(V^2)/R
KQ/r

11. force of gravity between two objects of mass m
GM*M/(r^2)
1/2wavelength
k|Q|/r^2
h/mv

12. new frequency of light as it enters a new substance
h/mv
frequency never changes for light problems
(Patm) + (Pgauge)
no temp change

13. energy of a photon if wavelength is known
roeVg
mV -m(Vo)
hc/wavelength
m(v^2)/qvB

14. formula for period of a pendulum
2Pi * sqrt(l/g)
constant volume
elastic collision
rF

15. isometric
constant volume
inelastic collision
deltaU -deltaW
qV

16. formula for centripetal acceleration
(V^2)/r
m(v^2)/qvB
h/wavelength
net work = delta K

17. new wavelength of light as it enters a new substance
mgCostheta(mu)d
roeVg
hc/wavelength
(No)(wavelength)=(Nn)(new wavelength)

18. EMF of a battery having internal resistance R
constant volume
no force (right hand rule)
(Fn)(mu)
V+IR

19. formula equating energy and mass
opposite motion
Ed=V
2Pi * sqrt(l/g)
e=mc^2

20. formula for charge stored in a capciator
GM*M/(r^2)
hc/wavelength
Q=CV
inelastic collision

21. formula for finding the magnetic field a distance r from a current carrying wire
KI/r
e=mc^2
qrB/m
(Di)/(Do) or (Hi)/(Ho)

22. natural frequency of a closed tube of length L
1/4wavelength
BA
(N2)/(N1)
AV=(A2)(V2)

23. force a charge in a Bfield
qVB
1/2wavelength
V+IR
BA

24. the force on a charge in an electric field
VI
qE
qVB
n(Cv)(deltaT)

25. snells law
nSintheta=nsintheta
joules/second
(1/Do) + (1/Di) = (1/f)
G M/((d/2)^2)

26. work energy theorum
perfectly inelastic collision
KI/r
net work = delta K
(3/2)nRdeltaT

27. the units of current other than amps
AV=(A2)(V2)
FV
Columbs/second
dSintheta=mwavelength

28. the electric force between two objects of charge Q
L -LCostheta
constant pressure
K |q||Q|/r^2
joules/second

29. formula for torque
MC(deltaT)
KI/r
rF
Columbs/second

30. velocity of a molecule of gas
frequency never changes for light problems
deltaU = deltaQ + deltaW
sqrt(3KT/m)
mgCostheta(mu)d

31. formula for energy of a spring mass when spring is at maximum displacement
.5KA^2
((Qin) -(Qout))/(Qin)
Ed=V
k|Q|/r^2

32. resistance of a wire
inelastic collision
k|Q|/r^2
KI/r
pL/A

33. formula relating voltage and electric field
no force (right hand rule)
E/B
Ed=V
(Fn)(mu)

34. force of frction on an incline
mgCostheta(mu)d
perfectly inelastic collision
hc/wavelength
GM*M/(r^2)

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
e=mc^2
MC(deltaT)
net work = delta K

36. focal length of a mirror with radius d
m(v^2)/qvB
V^2=(Vo)^2 +2a*change in x
inelastic collision
d/2

37. formula for finding the momentum of a photon
J= Ft
Joules/Columb
h/wavelength
((Th) -(Tl))/(Th)

38. what direction is friction?
.5KA^2
joules/second
no temp change
opposite motion

39. adibatic
no heat flow
((Th) -(Tl))/(Th)
deltaU = deltaQ + deltaW
(V^2)/R

40. isothermal
(Patm) + (Pgauge)
(V^2)/r
no temp change
qV

41. electric field in a distance r from a charge
sqrt(3KT/m)
mV -m(Vo)
k|Q|/r^2
(I^2)RT

42. formula for efficiency of a heat engine using work out
no force (right hand rule)
G M/((d/2)^2)
m(v^2)/qvB
(Wnet)/(Qin)

43. second kinematic
GM*M/(r^2)
delta x = (Vo)t + .5at^2
VI
(EMF)Rt/10

44. formula for finding magnetic flux
((Qin) -(Qout))/(Qin)
BA
k|Q|/r^2
F/A

45. force of friction
delta x = (Vo)t + .5at^2
d/2
(Fn)(mu)
deltaU = deltaQ + deltaW

46. type of collision where objects stick togerther
sqrt(3KT/m)
h/mv
elastic collision
perfectly inelastic collision

47. formula for power with current and voltage
constant volume
VI
no temp change
constant pressure

48. formula for Carnot efficiency
d/2
net work = delta K
inelastic collision
((Th) -(Tl))/(Th)

49. pressure
(I^2)RT
(EMF)Rt/10
pL/A
F/A

50. formula for constructive interference in a thin membrane with two phase changes
.5mV^2 + .5KA^2
d/2
deltaU -deltaW
2nt=mwavelength