I need the complete working solutions and accurate answers to this question. Tha

Question

I need the complete working solutions and accurate answers to this question. Thanks.

A point charge of-7 C is located at: 3 m, y--2 m. A second point charge of 12 C is located at x 1 m,y-3 m (a) Find the magnitude and direction of the electric field at x =-1 m, y = 0. N/C Help ResetEnter 9264.2 (2.5 points] 1 attempt(s) made [after that, multiply credit by 0.5 up to 10 attempts] 9264.2 NO (maximum allowed for credit-5) * (counterclockwise from plus x axis) 36.67 [2.5 points] 1 attempt(s) rnade (rnaximum allowed for credit = 5) [after that, multiply credit by 0.5 up to 10 attempts] 36.67 NO Reset Enter (b) Calculate the magnitude and direction of the force on an electron at x =-1 m,y-0. 1.48(10)A-15 [2.5 points] 1 attempt(s):nade (rnaxinum allowed for credit = 5) [after that, multiply credit by 0.5 up to 10 attempts] 1.48(10)A-15 NO (1.48e-15) Reset Enter * (counterclockwise from plus x axis) 36.67 [2.5 points] 1 atternpt(s) made (maximurn allowed for credit = 5) [after that, multiply credit by 0.5 up to 10 attempts] 36.67 NO Reset Enter

Explanation / Answer

a] Ex = summation kq/r^2

= 9e9*7e-6/(4^2+2^2)*4/sqrt(4^2+2^2) -  9e9*12e-6/(2^2+3^2)*2/sqrt(2^2+3^2)

= -1791 N/C

Ey = -9e9*7e-6/(4^2+2^2)*2/sqrt(4^2+2^2) -  9e9*12e-6/(2^2+3^2)*3/sqrt(2^2+3^2)

= -8321 N/C

Enet = sqrt(8321^2+1791^2)

= 8511 N/C

angle = 180 + arctan(8321/1791)

= 257.85 degree

b] Fnet = Eq = 8511*1.6e-19

= 1.362*10^-15 N

direction = 77.85 degree as it is negative charge

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