Through photosynthesis of plants. Plants take in carbon dioxide (CO2) and produce oxygen (O2)
Tension pointing up at the top
Weight pointing down at the bottom
If there is someone standing inside the elevator, there will be a normal reaction force pointing down at the bottom.
Answer:
8.46 N/C
Explanation:
Using Gauss law

Gauss's Law states that the electric flux through a surface is proportional to the net charge in the surface, and that the electric field E of a point charge Q at a distance r from the charge
Here, K is Coulomb's constant whose value is 
r = 0.43 + 0.106 = 0.536 m
