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310
CHAPTER 24
(b) The next minimum encountered is the
2
m
=
minimum; and at that point,
15
sin
22
dm
δ
θλ
==
+
=
λ
or
()
11
555
.7
m
5
sin
sin
3
0
0
m
d
θ
−−
(
27.7
=
°
Then,
)
1000 m tan27.7
524
y
=°
m
=
so the car must travel an additional
124 m
24.8
In a doubleslit interference pattern the distance from the central maximum to the
position of the
order bright fringe is given by
th
m
m
ym
L
d
=
where
d
is the distance between the splits and
L
is the distance to the screen. Thus, the
spacing between the first and secondorder bright fringes is
( )
9
3
600
10
m
2.50 m
[2
1]
1
0.0300 m
3.00 cm
0.050
10
m
L
d
−
−
×
= −
=
=
=
×
21
yy y
∆= −
24.9
The path difference in the two waves received at the home is
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 Spring '09
 Physics, Work

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