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//Example 29.2
q=1.60*10^-19;//Charge of an electron (C)
V=50*10^3;//Potential difference (V)
hf=q*V;//Maximum photon energy (J)
hf=hf*1/(1.60*10^-19);//maximum photon energy (eV)
printf('Maximum x-ray photon energy = %0.1f keV',hf/1000)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest
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