PHL100Y1 Study Guide - Final Guide: Sukha, Teleological Argument, Hard Determinism

1. The problem statement, all variables and given/known dataThe 3s state of Na has an energy of -5.14 eV. Determine the effective nuclear charge.2. Relevant equationsZeffective = Z - S (not listed in text book, found this online when trying to figure out the problem)3. The attempt at a solutionNothing in the text book in this section talk about determining nuclear charge. I know that Na is in the 2s^2 2p^6 group

Question- Two identical objects, each of rest massm₀, moving with equal but opposite velocities of 0.50cin the laboratory reference frame, collide and stick together. Theresulting particle is at rest with mass M₀. Determine anexpression for M₀ in terms on m₀.

From what I understand, this is a type of rest mass problem usuallygiven in modern physics courses. I came across this one day andtried to attempt it, but could not get anywhere because I could notunderstand what they meant by determining an expression forM₀ in terms of m₀. Is somebody able to helpme determine an expression for this problem?