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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. what direction is friction?
no heat flow
opposite motion
.5CV^2 or .5 Q^2/C or .5QV
n(Cv)(deltaT)

2. radius of curvature of a charged particle as it enters a uniform magnetic field
0
VI
m(v^2)/qvB
Q=CV

3. heat during a cyclic process (net heat)
pL/A
deltaU -deltaW
BLv
(Fn)(mu)

4. type of collision where K is conserved
n(Cv)(deltaT)
roegh
elastic collision
(Di)/(Do) or (Hi)/(Ho)

5. type of collision where K is not conserved
rF
inelastic collision
BA
(3/2)nRdeltaT

6. type of collision where objects stick togerther
perfectly inelastic collision
Columbs/second
V^2=(Vo)^2 +2a*change in x
inelastic collision

7. formula for impulse involving momentum
.5CV^2 or .5 Q^2/C or .5QV
Ed=V
mV -m(Vo)
inelastic collision

8. formula for impluse involving time
V = (Vo) + at
J= Ft
FV
inelastic collision

9. formula for height of the block (at the start of a pendulum string) in terms of theta and L
qV
pL/A
KI/r
L -LCostheta

10. energy stored in a capacitor
KI/r
sqrt(T/(m/))
pL/A
.5CV^2 or .5 Q^2/C or .5QV

11. formula for period of a pendulum
1/2wavelength
2Pi * sqrt(l/g)
FV
h/wavelength

12. formula for current through the resistor when the ten coils are removed from the B field in an amount of time t
Ed=V
M(Lf)
(EMF)Rt/10
KQ/r

13. electric field in a distance r from a charge
1/2wavelength
k|Q|/r^2
J= Ft
(Wnet)/(Qin)

14. formula for energy of a spring mass when spring is neither at maximum displacement nor at equilibrium
inelastic collision
Joules/Columb
Ed=V
.5mV^2 + .5KA^2

15. equation for the first law of thermodynamics
constant pressure
h/wavelength
mV -m(Vo)
deltaU = deltaQ + deltaW

16. velocity of a molecule of gas
sqrt(3KT/m)
(No)(wavelength)=(Nn)(new wavelength)
V = (Vo) + at
qV

17. the units of current other than amps
Columbs/second
qVB
Q=CV
roegh

18. force a charge in a Bfield
e=mc^2
nSintheta=nsintheta
qVB
hc/wavelength

19. formula for change in internal energy in a cosnstat volume PV process
constant pressure
(3/2)nRdeltaT
delta x = (Vo)t + .5at^2
(N2)/(N1)

20. heat required to change temperature of a substance
(3/2)nRdeltaT
MC(deltaT)
sqrt(T/(m/))
1/((1/C)+(1/C)..........)

21. formula for finding the energy required to move a charged particle from infinity to a point a certain distance away from a charged particle
d/2
V^2=(Vo)^2 +2a*change in x
qV
-KA

22. formula for energy of a spring mass when spring is at maximum displacement
Ed=V
mV -m(Vo)
no force (right hand rule)
.5KA^2

23. adibatic
G M/((d/2)^2)
1/2wavelength
(V^2)/r
no heat flow

24. second kinematic
GM*M/(r^2)
E/B
rF
delta x = (Vo)t + .5at^2

25. focal length of a mirror with radius d
J= Ft
qVB
d/2
-KA

26. formula for power with current and voltage
VI
deltaU -deltaW
sqrt(T/(m/))
(EMF)Rt/10

27. formula for power with current and resistance
rF
(I^2)R
qE
.5mV^2 + .5KA^2

28. 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)
F/A
.5KA^2
BA

29. new frequency of light as it enters a new substance
roegh
pL/A
qrB/m
frequency never changes for light problems

30. formula for the wavelength (debroglie wavelength) of a moving particle
inelastic collision
h/mv
(Fn)(mu)
elastic collision

31. equation of continuity
1/((1/C)+(1/C)..........)
frequency never changes for light problems
AV=(A2)(V2)
constant pressure

32. formula for constructive interference in a thin membrane with two phase changes
MC(deltaT)
frequency never changes for light problems
Columbs/second
2nt=mwavelength

33. the force on a charge moving parallel to a magnetic field
joules/second
sqrt(T/(m/))
no force (right hand rule)
(1/Do) + (1/Di) = (1/f)

34. change in internal energy during a cyclic process
M(Lf)
1/2wavelength
no force (right hand rule)
0

35. snells law
inelastic collision
2Pi * sqrt(l/g)
(I^2)R
nSintheta=nsintheta

36. heat required to melt a substance
deltaU -deltaW
no temp change
M(Lf)
J= Ft

37. formula for centripetal acceleration
KI/r
elastic collision
mV -m(Vo)
(V^2)/r

38. resistance of a wire
J= Ft
inelastic collision
V+IR
pL/A

39. the electric force between two objects of charge Q
(V^2)/R
M(Lf)
K |q||Q|/r^2
G M/((d/2)^2)

40. electric potential a distance r from a charge
KQ/r
-KA
(Fn)(mu)
perfectly inelastic collision

41. first kinematic
no force (right hand rule)
.5mV^2 + .5KA^2
V = (Vo) + at
m(v^2)/qvB

42. heat during an isometric process
no temp change
n(Cv)(deltaT)
(V^2)/R
opposite motion

43. natural frequency of an open tube of length L
Columbs/second
constant volume
1/2wavelength
delta x = (Vo)t + .5at^2

44. units for voltage other than volts
mV -m(Vo)
Joules/Columb
MC(deltaT)
constant pressure

45. energy of a photon if wavelength is known
hc/wavelength
roeVg
((Qin) -(Qout))/(Qin)
BA

46. EMF of a battery having internal resistance R
roeVg
k|Q|/r^2
V+IR
KI/r

47. velocity of waves on a string if tension is known
sqrt(T/(m/))
((Qin) -(Qout))/(Qin)
V+IR
.5mV^2 + .5KA^2

48. formula equating energy and mass
(N2)/(N1)
e=mc^2
(hc/wavelength)=h(Fo) +(Vs)
roegh

49. formula for power with Voltage and resistance
n(Cv)(deltaT)
E/B
Q=CV
(V^2)/R

50. formula to find the gauge pressure at the bottom of a pool
roegh
n(Cv)(deltaT)
V+IR
rF