NOTE: In this problem, we will ignore any interactions between electrons. A hypo

Question

NOTE: In this problem, we will ignore any interactions between electrons. A hypothetical neutral atom has 93 electrons and a nucleus of mass m = 2.23e-25 kg. One of its electrons is held in a circular orbit of radius r = 5.5e-10 m by electrostatic attraction between the electron and the nucleus. a) Calculate the speed of orbit of this electron. v = _______ m/s b) Calculate the period of orbit for this electron. ? = _______ s c) There are two forces acting on the electron due to the nucleus: the gravitational and electrostatic attractions. Calculate the ratio of the magnitude of the electric force/magnitude of the gravitational force exerted by the nucleus on this electron. Ratio = d) Suppose the nucleus of this atom has fairly uniform charge distribution, and radius 1.12e-11 m. Find the magnitude of the electric field at the surface of the nucleus. E = N/C

Explanation / Answer

(a) E = K (-5-3+2)

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