Links:
[1] http://demoweb.physics.ucla.edu/node/502
[2] http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.html
[3] http://ephysics.physics.ucla.edu
[4] http://www.myphysicslab.com/
[5] http://www.falstad.com/mathphysics.html
[6] http://www.physics.umd.edu/lecdem/
[7] http://www.physics.umd.edu/lecdem/outreach/QOTW/active/questions.htm
[8] http://physicslearning.colorado.edu/PiraHome1.asp
[9] http://www.exploratorium.com/imagery/sounds/30_MPH_doppler.au
[10] http://livephoto.physics.rit.edu/LPVideos/firecracker/firecracker2.mov