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8. Let
1
2
m
e
v
2
=
E
photon
=
hc
λ
and solve for
v
:
v
=
r
2
hc
λm
e
=
r
2
hc
λm
e
c
2
c
2
=
c
s
2
hc
λ
(
m
e
c
2
)
=(
2
.
998
×
10
8
m
/
s)
s
2(1240 eV
·
nm)
(590 nm)(511
×
10
3
eV)
=8
.
6
×
10
5
m
/
s
.
Since
v
¿
c
, the nonrelativistic formula
K
=
1
2
mv
2
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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, Photon

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