tarea4re
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Transcript of tarea4re
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8/12/2019 tarea4re
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80 KeV
25K eV
0h+mec2 =h+mec
2 +Ke
0
Ke
=c/
ch
0=
ch
+Ke
0
0=
ch
ch+Ke
0= h
mec(1 cos)
= arcos
1 +mec
h (0
)
psen= pesen
p
pe
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E2e =m2ec
2 +p2ec2
Ee = mec2 +Ke pe
pe=
(mec2 +Ke)2
c2 m2ec
2 =
K2ec2
+ 2meKe
p =h/
pfoton = h/ = pe
Efotn= ch
=Ee=
m2ec? +p
2ec
2
cpe=
m2ec2 +p2ec
2 c2p2e =m
2ec
2 +p2ec2
W
nm
E= h
h
h= 6
626 1034J/s = c c= 3 108ms
= 3 1023Hz
E= 1.99 1010
J
Etotal =N E N
Etotal = P t P N
t
N
t =
P
E =
60W
1.99 1010J = 3.02 1011fotones/segundo.
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