dear students boys and girls,
I hope you find the forum intersting and useful for you. here you are CH 2 answers in this link(as it has diagrams and pictures so it will be hard to put it here directly)
download it and extract the file using winzip program. thanks alot
http://www.tntup.com/file.php?file=6e96684c4c11a7cc0db4a1547d0e103e[/size]