The nucleus of lead-208, 
, has 82 protons within a sphere of radius 6.34 × 10?15. Each electric charge has a value of 1.60 × 10?19 C. Assuming that the protons create a spherically symmetric distribution of charge, calculate the electric field at the surface of the nucleus.
What will be an ideal response?
2.94 × 1021 N/C
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