please include the energy changes from the burning of energy at the elecrical plant and sound energy
2007-07-05 09:21:23 · 4 answers · asked by *super* *star* 1 in Science & Mathematics ➔ Physics
at power plant: coal burns to produce heat (chemical to thermal)
heat produces motion in generator:(thermal to mechanical)
generator produces electricity:(mechanical to electrical)
electricity produces electrons shooting from cathode:(electrical to kinetic energy of electrons)
electricity produces sound: (electrical to mechanical)
sound is produced by moving a speaker
2007-07-05 09:31:25 · answer #1 · answered by smacal1072 2 · 0⤊ 0⤋
Hi. For one, electrical energy is used to accelerate electrons from the cathode to the screen on the front which strike phosphors and emit photons. The sound is made magnetically.
2007-07-05 16:33:05 · answer #2 · answered by Cirric 7 · 0⤊ 0⤋
I'm unsure of your question but, my energy changes to Potential Energy, as I settle down on the couch to watch.
2007-07-05 16:28:54 · answer #3 · answered by Norrie 7 · 0⤊ 0⤋
OK, here we go.
Coal - Chemical Energy converted to
Electrical energy (& heat energy) sent over transmission lines to your home and to the televison where it is converted to
Light, heat, and sound.
2007-07-05 16:28:37 · answer #4 · answered by bigtony615 4 · 0⤊ 0⤋