The corrosion of silver, also known as tarnishing, is due to the reaction of silver with sulfur-containing compounds in the air, such as hydrogen sulfide ($H_2S$). This reaction results in the formation of a black coating of silver sulfide ($Ag_2S$) on the surface of the silver.
A force of \( P = 100 \, {N} \) is applied at the ends of the pliers as shown in the figure. Neglecting friction, the force exerted by the upper jaw on the workpiece is ........... N (in integer).
Consider a beam with a square box cross-section as shown in the figure. The outer square has a length of 10 mm. The thickness of the section is 1 mm. The area moment of inertia about the x-axis is ........... mm\(^4\) (in integer). 