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to generate this magnetic moment?
a)
b)
c)
d)
e) 1 femtometer/second
24 micrometer/second
24,000 km/s
75,000 km/s
240,000 km/s 9: The picture shows a region
bounded by two charged infinite
plates. The left one is positively
charged, the right is negatively
charged. Between the plates, we
place an electric quadrupole.
Contours on the figure are
equipotential lines separated by
10 V. What is the magnitude and
direction of the electric field at
point A? a)
b)
c)
d)
e)
f) +  10 N/C
100 N/C
1000 N/C
100 N/C
10 N/C
1000 N/C A
1 cm 10: (5 points) Consider the circuit below. The switch remains closed for a long time, then is
suddenly opened. What is the current in the resistor on the right hand side just after the switch
is opened?
a)
b)
c)
d)
e) 2VB/3R
VB/3R
3VB/2R
VB/6R
3VB/R R
VB C R R R 11: (5 points) The point labeled A on the object is 15 cm from a converging lens with a 5 cm
focal length. Point A is 3 cm above the horizontal line. Consider the two rays shown below: the
first leaves A and strikes near the top of the lens, the second leaves A and strikes near the
bottom of the lens. Where do these two rays cross? Please provide both the x and y positions of
the crossing point, measured from an origin at the center of the lens.
a)
b)
c)
d)
e) x = 7.5 cm, y = 1.5 cm
x = 10 cm, y = 3 cm
x = 6.6 cm, y = 1.5 cm
x = 10 cm, y = 3 cm
x = 7.5 cm, y = 2 cm A
B
C 12: (5 points) A diffraction grating has 1500 vertical slits per centimeter. Light striking this
grating is an equal mix of 400 nanometer blue and 600 nanometer red light. Draw what you
would see on a 20 cm wide screen 1 m away from the grating. The center of the screen is
placed where the undeflected beam would pass. Label each feature as made up of blue light,
red light, or both, and include all locations where light strikes the screen. 10 cm 5 cm Original beam 5 cm 10 cm 13: (5 points) Xray diffraction can be used to determine the arrangements of atoms in
molecules or solids. Imagine a new molecule made in of interconnected ro...
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 Spring '08
 Mckay
 Physics

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