HOMEWORK 10 MATTER CHARGE COULOMB s LAW and the ELECTRIC FIELD DUE MONDAY 19 NOVEMBER INSTRUCTIONS ANSWER all MC CONCEPTUAL QUESTIONS and provide brief explanations for your choices 10 pts max 3 pts min 1 each incorrect response Do BOTH Problem s 10 pts 5 5 SHOW ALL WORK NO WORK NO CREDIT NO EXCEPTIONS QUESTIONS 1 2 3 refer to the fundamental PROPERTIES of CHARGE listed below A E A Ao A e B C D E LIKE CHARGES REPEL ORDINARY MATTER is NEUTRAL CONDUCTION ELECTRONS CONTACT CHARGING IDENTIFY which of the above properties BEST explains each of the following OBSERVATIONS or PHENOMENA 1 GROUNDING is an effective method for NEUTRALIZING charged objects 2 Gold is an excellent ELECTRICAL CONDUCTOR and is frequently employed in delicate electronic circuits to insure reliable connections and contacts 3 PHOTOIONIZATION QUESTIONS 4 and 5 refer to the DIPOLE CHARGE DISTRIBUTION diagrammed below 4 The DIRECTION of the ELECTRIC FIELD at FIELD POINT c is A B C D E 0 5 The DIRECTION of the NET ELECTROSTATIC FORCE on a NEG ATIVE TEST CHARGE located at FIELD POINT c due to the DIPOLE is A B C D E 0 For QUESTIONS 6 and 7 refer to the QUADRAPOLAR CHARGE distribution sketched in the accompanying DIAGRAM 6 The DIRECTION of the ELECTRIC FIELD due to the CHARGE DISTRIBUTION at POSITION b A B C D E 0 7 The DIRECTION of the ELECTRIC FORCE on a NEGATIVE TEST CHARGE due to the CHARGE DISTRIBUTION at POSITION b A B C D E 0 The DIPOLE ION INTERACTION 5 Consider a simplified MODEL of a WATER MOLECULE interacting with a Na ion DATA Q1 2e 0 0 Q2 e 2Ao 53o Q3 e 2Ao 307o q0 e 4Ao 0o 1 Ao 1x10 10 m e 1 6x10 19 C Determine the NET ELECTROSTATIC FORCE on q0 due to the WATER MOLECULE ANSWER F0 9 79x10 10 N ux E dE kdQ R2 u 5 Consider a thin semi circular insulator carrying a uniform linear charge density radius b The orientation of the insulator in indicated in the diagram center 0 0 0 Determine the ELECTRIC FIELD at FIELD POSITION 0 0 0 NOTE k 9x109 N m2 C2 b 0 20 m 1x10 10 C m ANSWER E 0 0 0 2k b uy 18 0 N C uy
View Full Document
Unlocking...