Alpha Decay. In a simple model for a radioactive nucleus, an alpha particle (m=6.64 ×10^-27 kg) is trapped by a square barrier that has width 2.0 fm and height 30.0 MeV . (a) What is the tunneling probability when the alpha particle encounters the barrier if its kinetic energy is 1.0 MeV below the top of the barrier (Fig. 40.25) ?( b) What is the tunneling probability if the energy of the alpha particle is 10.0 MeV below the top of the barrier? | Numerade

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An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.64 ×10^-27 kg) traveling horizontally at 35.6 km / s enters a uniform, vertical, 1.10 -T magnetic field. (a) What is the diameter of the path followed by this alpha particle? (b) What effect does the magnetic field have on the speed of the particle? (c) What are the magnitude and direction of the acceleration of the alpha particle while it is in the magnetic field? (d) Explain why the speed of the par

An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.64 ×10^-27 kg) traveling horizontally at 35.6 km>s enters a uniform, vertical, 1.80-T magnetic field. (a) What is the diameter of the path followed by this alpha particle? (b) What effect does the magnetic field have on the speed of the particle? (c) What are the magnitude and direction of the acceleration of the alpha particle while it is in the magnetic field? (d) Explain why the speed of the partic

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