Alpha particles 4/2 He2+ beamed at thin metal foil may pass directly through without changing direction. be slightly diverted by attraction to electrons. be reflected by direct contact with nuclei. a and c a, b, and c
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Alpha particles beamed at thin metal foil may A. pass directly through without changing direction B. be slightly diverted by attraction to electrons C. be reflected by direct contact with nuclei D. A and C E. A, B, and C
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According to the Bohr Model, the atom consists of negatively charged electrons that move in circular orbits around a positively charged core (nucleus). In the case of hydrogen atom, which has a single electron (mass 9.1 x 10^-31 kg, charge 1.6 x 10^-19 C), the electron orbits the nucleus containing a single proton with a charge of 1.6 x 10^-19 C. Assuming the nucleus is fixed, if the radius of the first Bohr orbit is 5.3 x 10^-11 meters and the electron moves around the nucleus at a speed of 2.2 x 10^6 m/s, what is the magnitude of the magnetic field caused by the moving electron at the nucleus? Hint: Apply Biot-Savart Law.
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Electrons (mass m, charge -e) are accelerated from rest through a potential difference V and are then deflected by a magnetic field B that is perpendicular to their velocity. The radius of the resulting electron trajectory is: √(2eV/m)/B B√(2eV/m) √(2mV/e)/B B√(2mV/e) none of these
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