how long can a person survive with limited amount of oxygen in different sized space?

Currently we have an older delta pull out single lever faucet, but many times the flexible hose that pulls out has gotten caught on dishwasher or water filter hoses, causing the hose to pop off the faucet and flood the floor! The pull out feature is great, but how can one avoid this problem with...

What the amount of space and Time curvature sets?

Someone I know was in the united states on a visa and was arrested for an ounce of cocain. He obtained a lawyer and they said he had to possibly do 2 years in prison and then after the 2 years he would probably be deported. He never finished with the court system, he decided to flee the united...

I have some obstacles that limit the amount of initial drop (plumbing in a concrete slab) allowed in the bathroom group and wondered if it is OK to discharge a water closet directly into a sanitary tee (inlet of the tee pointing upwards)? Can the closet flange be shortened (sawed off) to further...