A. the removal of air cuts off the electric current.
B. the sound waves are removed with the air.
C. sound can't travel in a vacuum.
D. sound can't travel through air.
2006-10-20 20:02:44 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Physics
C. You cannot transmit sound through a vacuum.
2006-10-20 20:04:24 · answer #1 · answered by infernal_seamonkey 4 · 0⤊ 0⤋
Sound is transmitted through a medium as a longitudinal wave with periodic areas of compression and rarifaction of the medium. As a bell jar is pumped down the medium ( a gas) is sequentially rarified and eventually no acoustic disturbance can be transmitted as there are no periodic areas of compression/rarifaction. This can be shown to be related to the mean free path of the gas molecules as the mean free path gets longer with decreasing pressure and the point at which this occurs will depend on the frequency of the acoustic energy, eg.
2006-10-21 07:30:50 · answer #2 · answered by rquantum11 1 · 0⤊ 0⤋
DUH!!!! LOL 8-) you funny.
"Sound" is a "Pressure Wave" you can't generate sound in a vacuum because there is nothing to carry the "Pressure Wave".
But, if you were to Study "Quantum Mechanics" you may be able to pass "Energy" though the very fabric of Space/Time ;-)
Anyway, you can send "Radio Waves" through a vacuum , that's how Astronauts communicate with Houston............ Houston... we have a problem............. the Main Fuel Tank Insulation has hit our Space Shuttle Wing............ Houston to Space Shuttle........... no Worries it shouldn't be a problem........... Space Shuttle on re-entry......... Houston we have a Prob.......................... equals Nine Dead Astronauts. If I was in charge, there would have been Nine Dead Engineers and Government officials! If you are going to be an Engineer... DO YOUR JOB or go clean toilets for a living ;-(
2006-10-21 03:57:57 · answer #3 · answered by TommyTrouble 4 · 0⤊ 0⤋
The sound is just vibrating air. The sound coming out of the jar is the vibrating air making the glass vibrate. The volume depends on the force and number of the air molecules hitting the glass. Less air means fewer molecules and less sound. No air means no sound.
2006-10-21 16:37:40 · answer #4 · answered by Nomadd 7 · 0⤊ 0⤋
sound waves are incapable of travelling through a vacuum
2006-10-21 03:21:33 · answer #5 · answered by may 1 · 0⤊ 0⤋
C... Homework question eh?
2006-10-21 03:33:04 · answer #6 · answered by Product of Conception 3 · 0⤊ 0⤋
c
2006-10-21 03:30:41 · answer #7 · answered by MrZ 6 · 0⤊ 0⤋
C
2006-10-21 11:24:04 · answer #8 · answered by tut_einstein 2 · 0⤊ 0⤋