Not sure why you need dry ice in a bottle to produce sound. Open a soda or other fizzy drink bottle and you will get the sound of the carbon dioxide gas escaping.
When the bottle is about to get filled full then pitch of sound would go higher. This because of sound coming from a closed organ pipe. With that change we can confirm the filling of the bottle
This law would require police in the free states to help capture slaves escaping from slave states
Yes, since there would be no conduction of sound in a vacuum.
An engine might sound like a diesel at operating temperature if the engine was a diesel or if there was an issue with the manifold. Sometimes gases escaping the manifold cover could cause the engine to sound different.
I would check to see if you need an alignment.
yes
It can be, it would require a valid Passover hechsher.
Yes, it can be since it is made from wine, which can be Kosher for passover if created under appropriate supervision. The bottle would require a kosher for Passover hechsher.
Showing a movie without sound would still be considered a public performance, which would require a license.
bottle
It is so prisoners would have a hard time escaping.
I think the pitch would be lower because the sound is really low when it is empty.