011 (part 1 of 2) Three charges are arranged as shown in the figure. 2.2 nC -0.7 nC 3.1 m -1.5 m O 0.49 nC Find the magnitude of the electro- static force on the charge at the origin. The value of the Coulomb constant is 8.98755 x 10° N - m²/C?. Answer in units of nN. 012 (part 2 of What is the angle 0 between the electrostatic force on the charge at the origin and the pos- itive r-axis? Answer in degrees as an angle between -180° and 180° measured from the positive r-axis, with counterclockwise posi- tive. Answer in units of°.

011 (part 1 of 2) Three charges are arranged as shown in the figure. 2.2 nC -0.7 nC 3.1 m -1.5 m O 0.49 nC Find the magnitude of the electro- static force on the charge at the origin. The value of the Coulomb constant is 8.98755 x 10° N - m²/C?. Answer in units of nN. 012 (part 2 of What is the angle 0 between the electrostatic force on the charge at the origin and the pos- itive r-axis? Answer in degrees as an angle between -180° and 180° measured from the positive r-axis, with counterclockwise posi- tive. Answer in units of°.