Articles on Chemistry, Mathematics, Physics - Useful for JEE also

Interesting Chemistry Articles for Download

http://knol.google.com/k/narayana-rao-kvss/-/2utb2lsm2k7a/1448#


Mathematics

http://knol.google.com/k/narayana-rao-kvss/knol-sub-directory-mathematics/2utb2lsm2k7a/1455#

Interesting Articles on Physics for Dowload

http://knol.google.com/k/narayana-rao-kvss/knol-sub-directory-physics-interesting/2utb2lsm2k7a/1446#

Sound Waves and Doppler Effect - Audio Visual Lecture

http://www.curriki.org/nroc/Introductory_Physics_2/lesson45/Container.html


Contains material on

Sound waves

Doppler effect

Sonic Boom