Please answer all the questions with explanation! Thank you Wednesday Homework 2
ID: 1572148 • Letter: P
Question
Please answer all the questions with explanation! Thank you Wednesday Homework 2 Electrostatics Tuesday homework is to be uploaded to eCampus by 11:59pm in pdf format. No other formats will be graded. It handwritten, not typeset. The assignment must be right side up and easily readable. It must be worked must be on the printout of the pdf of the assignment available in eCampus. The multiple choice answer must be circled. In the space after the problem, a short justification of the answer is must be included. Multiple Choice Problem Wednesday Homework Problem 2.1 The nucleus of an atom is composed of protons and neutrons. Protons have a positive charge and neutrons are neutral. The nucleus is held together by the strong force which is far stronger than the electric force at very short distances. lf the strong force did not exist, could the electric force hold the nucleus together? Select One of the Followin (a) yes (b) no the nucleus contains newtons and latons d so the The neutrons are electrically new tial t the nucleus to electric farce. won Wednesday Homework Problem 2.2 An electrophorus is a flat metal plate with an insulating handle. The electrophorus is charged by grounding the plate while it sits on a charged dielectric. If an electrophorus is charged by grounding on a positively charged dielectric. what net charge does the electrophorus acquire? Select One of the Following (a) positive (b) negative me n hange becomes negative due on opposit Wednesday Homework Problem 2.3 One insulating sphere initially has charge Qi 0 and another insulating sphere has Q2 0 The spheres are then with a conducting What is the approximate sign of the charge on each lphere? Assume that there are no losses to the environment. Select One of the Following (c) Q 0, Q2 0Explanation / Answer
2.1) No. because the protons, all being same charged, would all repel each other leading to instability.
2.2) Negetive because initially it was neutral and grounding the positive part will leave th plate overall negetively charged.
2.3) B) because first sphere is insulating , charge won't flow from 1 to 2.
2.4) B) because given Q1>0 , and Q1 replels Q2 ,hence Q2 >0 because like charged spheres repel each other, and Q3 is attracted to both Q1 and Q2 , hence Q3<0 because opposite charged spheres attract. and Q4 is neutral. because of no interaction.