Chain saw By Ali Al Thani Chain saw Introduction A Chain Saw is a portable mechanical saw powered by electricity or gasoline ; the chain saw is used in activities cutting…

Session One: An Introduction to Computing History of Computers An Introduction to Computing - Session One: History of Computers * History of Computers First mechanical calculators…

1.) Differentiate sound from noise. Sound is a form of energy, just like electricity and light. Sound is made when air molecules vibrate and move in a pattern called waves,…

Chain saw By Ali Al Thani Chain saw Introduction A Chain Saw is a portable mechanical saw powered by electricity or gasoline ; the chain saw is used in activities cutting…

1.) Differentiate sound from noise. Sound is the movement of energy through substances in longitudinal (compression/rarefaction) waves.  Sound is produced when a force…