The figure shows three situations in which a Gaussian cube sits in an electric field. The arrows...

The figure shows three situations in which a Gaussian cube sits in an electric field. The arrows and the values indicate the directions of the field lines and the magnitudes (in \( \mathrm{N} \cdot \mathrm{m}^{2} / \mathrm{C} \) ) of the flux through the six sides of each cube. (The lighter arrows are for the hidden faces.) In which situation does the cube enclose a positive net charge,