Department of Mathematics and Natural Sciences PHY112 Final Examination Summer 2022 SECTION: 7 Please write your Name and ID on the first page of the answer script. Answer the questions by yourself. Plagiarism will lead to cancellation of scores. DO NOT WRITE ON YOUR QUESTION PAPER. Use your answer script for rough work. Answer 4 out of 5 questions. The highest possible score in the final exam is 40. May the odds be ever in your favour! ART 1: 1. (5 points) A charge +q is placed at one of the vertices of a cube. To find the flux through one of the faces of the cube. (5 points) Two small balls with a mass of 1kg are hanging on two separate strings 1 m long attached to a common point. They are given an identical charge and spread apart to a distance Im from each other. Determine the charge of the balls