Friday, April 5, 2019

Electric Fields tough question 1 (From Note)

In a simplified model, a uranium nucleus is a sphere of radius 8.0 × 10−15 m. The nucleus contains 92 protons (and rather more neutrons). The charge on a proton is 1.6 × 10−19 C. It can be assumed that the charge of these protons acts as if it were all concentrated at the centre of the nucleus. The nucleus releases an α particle containing two protons (and two neutrons) at the surface of the nucleus. Calculate

a)  the electric field strength at the surface of the nucleus before emission of the α-particle,
b)  the electric force on the α-particle at the surface of the nucleus,
c)  the electric potential at the surface of the nucleus before emission of the α-particle,
d)  the electric potential energy of the α-particle when it is at the surface of the nucleus.


Solution:












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