Zeev.....I've got a couple of questions that came up over breakfast the other day on physics questions that we just could not agree on. I have e-mailed my old physics prof who specialized in physics in the everyday world, but have yet to get an answer, so being the great guru that everyone professes you to be, I thought I would seek out your opinions. TIA, and know that we may never be able to eat breakfast together again unless we get this solved......
1. Has the earth maintained basically the same weight as it has had over the many millions of years of existence? With the increasing population and the need to grow and raise more food, has weight and energy just been displaced elsewhere or grown? We classified "the earth" as being the land as well as the atmosphere that gravity has withheld. I do realize that there has been some outside forces that have made their way into our atmosphere, and some that may have escaped through the ozone, but has it all maintained its balance?
2. If you took three gallon pots of water and sealed them into three separate cubes where nothing could escape, then left one at room temperature, boiled one, and then froze the other....would they all still weigh the same? If not, which would weigh more?, which would weigh less?
I realize these may just sound like time wasters, but we really do seek to understand the universe~!
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