i dont even know where to begin. please help me. and i dont just want the correc
ID: 1577058 • Letter: I
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i dont even know where to begin. please help me. and i dont just want the correct answer, id love a thorough worked out explanation showing all work. thank you so much!
asteringPhysics: Review - Exam 1: CH16-17 -Google Chrome secure https://session.masteringphysics.com/myct/itemView?assignmentProblemID=87235582&offset-prev; Review-Exam 1: CH16-17 Hide Timer tem 2 Constants Part A A +5.0-nC charge is at the paint (0.00 m, 0.00 m) and a -2.0-nC charge is at (3.0 m, 0.00 m). What work is required to bring a 1.0-nC charge from very far away to point (0.00 m, 4.0 m)? (k-14TTEO 9.0 x 109 N m2c2) 7.7 nJ 11 nJ 15 nJ 3.6 nJ Submit Request Answer Provide Feedback Next > 9:14 PMExplanation / Answer
Here ,
we need to find the potential at the point where the charge is to be put from infinity
potential due to a point charge = k * q/distance of point from charge
NOw, for the potential due to 5 nC
V1 = 9 *10^-9 * 5 *10^-9/4
V1 = 11.25 V
for the potential due to -2 nC
V2 = 9 *10^9 * (-2 *10^-9)/sqrt(4^2 + 3^2)
V2 = -3.6 V
net potential at the point = V1 + V2
net potential at the point = 11.25 - 3.6
net potential at the point = 7.65 V
Now , work done = potential * charge which is to be brought
work done = 7.65 * 1 *10^-9
work done = 7.65 *10^-9 J
work done = 7.65 nJ = 7.7 nJ
the work needed is 7.7 nJ
hope this helps
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