Question: In an experimental technique for treating deep tumors, unstable positively charged pions (+, elementary particles with a mass of 2.25 x 10-28 kg) penetrate the

In an experimental technique for treating deep tumors, unstable positively charged pions (π+, elementary particles with a mass of 2.25 x 10-28 kg) penetrate the flesh and disintegrate at the tumor site, releasing energy to kill cancer cells. If pions with a kinetic energy of 10 keV are required and if a velocity selector with an electric field strength of 2.0 x 103 V/m is used, what must be the magnetic field strength?

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