Science Buddies: "Ask an Expert"

hello, this is sree harsha, pls help me, i am in the need of knowing the densities of aluminium, magnesium,metal matrix composites,plastic and carbon fibers.
which of these can be used as container which has to be evacuated .and also suggest their costs and ease of availability.

Hi - It appears that your project deadline has most likely passed. I hope you located the answers to your questions for your science project, and I apologize for your question not being answered here in the Science Buddies Ask an Expert forums.

Amy
Science Buddies