7. Consider an infinite slab of charge with a uniform volume charge density (C/m^2) throughout its volume. The thick slab is located in a vertical (y, z) plane between x = -L and x = +L.

a) Use Gauss’s Law to determine the Electric Field for any point x > L to the right of the slab.

b) Use Gauss’s Law to determine the Electric Field for any point inside the slab ( − ≤≤+ ).

Please look at the image below for more clarity

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.