At each point on the surface of the cube shown in the figure the electric field is parallel to the z axis. The length of each edge of the - 40k N/C and on the bottom face it is É = + 16k N/C. cube is 2.9 m. On the top face of the cube the electric field É = Determine the net charge contained within the cube.

The charges in the figure are q1=q2= +e and q3=+2e. The distance a= 6.00μm. a) The horizontal component of the net electric field at point P is: _____i N/C. b) The vertical component of the net electric field at point P is:______j N/C. c) The magnitude of the net electric field at point P is:_____ j N/C. d) La dirección del campo Eléctrico neto en el punto P respecto al eje x+ es:______°

My answer is 42.9 cm but it is wrong but the unit CM si correct

Question 2 A 43.8 cm long rod has a nonuniform charge density given by the equation A(z) = Ae-2/b, where A = 2.50 nC/cm and b= 14.0 cm. What is the total charge on the rod? Hint: This problem requires integration! + + + + ++ Total charge on rod: +