Questions

It provides a framework for discussing network operations and design

Cable television or cable TV became widespread during the 1980's.

Author of the book A journey  is Tony Blair

Dust particles such as coal dust(smoke) are fine particle of a solid (carbon in the case of smoke) dispersed in air. They are colloidal systems and the particles are charged either positive or negative. In an applied electrical field, they are attracted towards the opposite electrodes. Movement of the particles towards the electrodes is known as 'electrophoresis'. Hence electrophoresis is applied to remove smoke within the chimeny itself without allowing it to escape into the air and cause nuisance.

Smoking can lead to emphysema as well as strokes is the true statement regarding tobacco use. Emphysema is related to the failure of lungs air sacs and cilia that eliminate the dust from the body.

The trajectory of the bullet is a parabola