(8%) Problem 6: In the figure, the point charges are located at the corners of an equilateral triangle 21 cm on a side. qa p. - - 2 qc 50% Part (a) Find the magnitude of the electric field, in newtons per coulomb, at the center of the triangular configuration of charges, given that qa = 1.1 nc, qb = -5.1 nC, and qc = 1.1 nc. Grade Summary E = N/C Deductions 0% Potential 100% sin( cos() tan() 7 9 HOME Submissions cotan( asin( acos( E 4 5 6 Attempts remaining: 12 (0% per attempt) atan( acotan( ) sinh( 2 3 detailed view cosh() tanh() cotanh() ENI O Degrees O Radians VC BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback 4 50% Part (b) Find the direction of the electric field in degrees below the right-pointing horizontal (the positive x-axis).direction of Eis towards go KDETated Cos cl YE Total EA Ed ETotal Since 2 c we can break Elated as in Etotal Cas cl I + Frond singly ) = hore Q = 30 50 :- ETON Cos 30 1 + Exotal Sin 30 1-] ) 2 3 8 7 5 x 5 3 2 + 387 5 x 1 1-T) 33 55. 757 - 1937.5 1