O qa (10%) Problem 8: In the figure, the point charges are located at the corners of an equilateral triangle 21 cm on a side. O go O qc Otheexpertta.comA 25% Part (a) Find the magnitude of the electric field in N/C at the location of qa, given that qu = 10.7 JC and qc = -4.8 JC . Grade Summary Eal = Deductions 0% Potential 100% sin() cos() tan() 7 9 HOME Submissions cotan() asin() acos() E 4 5 6 Attempts remaining: 8 (0% per attempt) atan() acotan() sinh() 2 3 detailed view cosh() tanh() cotanh() 0 END O Degrees O Radians VO BACKSPACE DEL CLEARA 25% Part (b) Find the direction of the electric field at qa in degrees above the negative x-axis with origin at qa. Grade Summary OEa Deductions 0% Potential 100% sin() cos() tan( 7 8 9 HOME Submissions cotan() asin() acos() F TA 4 5 Attempts remaining: 8 (0% per attempt) atan() acotan() sinh() 2 3 detailed view cosh( tanh() cotanh() END O Degrees O Radians VO BACKSPACE DEL CLEARA 25% Part (c) What is the magnitude of the force in N on qa, given that qa = 1.3 nC? Fal = Grade Summary Deductions 0% Potential 100% sin() cos() tan() 7 8 HOME Submissions cotan() asin() acos() 4 5 Attempts remaining: 8 (0% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosho tanh() cotanh() + 0 END O Degrees O Radians VO BACKSPACE DEL CLEARA 25% Part (d) What is the direction of the force on qa in degrees above the negative x-axis with origin at qa? Grade Summary OF a Deductions 0% Potential 100% sin() cos() tan 7 8 9 HOME Submissions cotan() asin() acos() F 4 5 6 Attempts remaining: 8 (0% per attempt) atan() acotan( sinh() 2 3 detailed view cosho tanh() cotanh() + END O Degrees O Radians VC BACKSPACE DEL CLEAR