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

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.