What are the principles involved in viscosity?

n a carbon monoxide (CO) molecule, the distance between the oxygen atom and the carbon atom is 1.13 × 10-10 meters. The mass of an oxygen atom is 16 atomic mass units (amu) and the mass of a carbon atom is 12 amu. How far from the oxygen (O) atom is the center of mass of the molecule, in meters? Justify your answer using your equations and rationale used.

The Force of resistance per unit area offered by a body against deformation is the stress. Is this statement correct?

A sample of a new plastic 100 cm in length 1.0 cm in width, and 0.1 cm in thickness was subjected to a force of 20 If it is stretched to 100.1 cm long, what is its Young’s modulus in psi unit? (1 psi = 6895 N/m2)