The speed of the electron emitted in the radioactive beta-decay is determined as 2.186 x 10⁶ m/s.
<h3>Speed of electron </h3>
The speed of the electron is determined from the total energy of the electron.
Assuming the emitted electrons are in first energy level, E = 13.6 eV
K.E = ¹/₂mv²
v² = 2K.E/m
v² = (2 x 13.6 x 1.6 x 10⁻¹⁹)/(9.11 x 10⁻³¹)
v² = 4.777 x 10⁻¹²
v = 2.186 x 10⁶ m/s
Learn more about speed of electrons here: brainly.com/question/12889606
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Fossil fuels like coal, natural gas and oil.
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