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dZeryM - 1
Calculation: dZeryM - 1
E
=
k
*
σ4
*
π
*
R
^
2
/
r
^
2
E
=
k
*
σ4
*
π
*
R
^
2
/
r
^
2
=
E
=
R
^
2
*
k
*
π
*
σ4
/
r
^
2
=