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// Ex17_7 Page:341 (2014)
clc;clear;
h_cross = 1.05e-034; // Reduced Planck's constant, Js
e = 1.6e-019; // Charge on an electron, C
m_pi = 140e+006; // Mass of pi_meson, eV/Sq.c
c = 3e+008; // Speed of light in vacuum, m/s
r = h_cross*c/(m_pi*e); // Range of the nuclear force, m
printf("\nThe range of the nuclear force = %3.1f fm", r/1e-015);
// Result
// The range of the nuclear force = 1.4 fm
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