@ eagleonline.hccs.edu 2519 Quiz: extra credit exam-2 Search Textbook Solut Ques

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@ eagleonline.hccs.edu 2519 Quiz: extra credit exam-2 Search Textbook Solut Question 1 1 pt Calculate the magnitude of the force between a charge of +7 uC located at (3,4) (in m) and a charge of -3 HiC located at (-2.3). Write your answer in milli-newtons 2679522.0000 Question 2 1 pts Calculate the magnitude of the electric field at the point (3.2) due to a charge of-5 nC located at (2.-3) m. | Question 3 1 pts A point charge of 5 micro-coulomb is located at the point (4.4). Calculate the the electric field at the point (-3,-1) due to this charge. Since the electric field is a vector, write as your answer only the X- component of the electric feld vector. (use correct sign for the X component, i.e. if the E-field is pointing left, write it as a negative number). All distances are in meters 4

Explanation / Answer

here,

q1 = + 7 uC = 7 * 10^-6 C is at (x1 , y1) = ( 3 ,4)

q2 = - 3 uC = - 3 * 10^-6 C is at ( x2 , y2) = ( - 2 , 3)

sepration between points , r = sqrt((y2 - y1)^2 + ( x2 - x1)^2)

r = sqrt((-2 - 3)^2 + ( 3- 4)^2) units

r = 5.1 units

the magnitude of force between them , F = K * q1 * q2 /r^2

F = 9 * 10^9 * 7 * 10^-6 * 3 * 10^-6 /5.1^2

F = 7.27 * 10^-3 N

F = 7.27 mN

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