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70. We apply Eq. 3442 (twice) to obtain
I
=
I
0
cos
2
θ
1
cos
2
θ
2
where
θ
1
=20
◦
and
θ
2
=(20
◦
+
θ
). Since
I/I
0
=0
.
200, we fnd cos
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics

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