How does the law of conservation of energy impact the amount of energy that is available on our planet?

The Law of Conservation of Energy impacts the amount of energy that is available on our planet because energy can not be created or destroyed, but it can be transformed into different categories of itself. Generally saying that the creation of energy is impossible, being that energy is itself until it gets transformed into a different category. Energy under that category can run out, therefore, more energy must be transformed into that category to replace the energy that was already yet consumed.

electric field formed we see that the field is uniform only for a sheet of uniform charge, so the correct answer is b

Explanation:

Let's analyze the shape of the electro field in each given configuration

i) a charge line.

   Using Gauss's law the field varies inversely with the distance

          E = 2K λ / r

ii) an infinite leaf. the electric field is

         E = σ / 2ε₀

iii) two spherical shells

in this case the charge can be considered centered in the center of each shell and the electric field is

         E = k q / r²

for each shel linterior

The outer shell does not create an electric field in the space between them

When examining each electric field formed we see that the field is uniform only for a sheet of uniform charge, so the correct answer is b