All of it. I make it magically disappear... I'm god, I guess.
When I remove all the matter, is there anything left? Is the nothing used to be occupied by all that matter "something"? Is the space-time sans matter, still space-time?
Really? It rather depends upon the ethanol source and the ethanol percentage. Corn produced ethanol in E10/E15 mixes are at best a wash, worse than pure petrol when land use changes are taken into account.
Why do you keep equating engine size and speeding? It's a false connection. Except for the fastest highways I can exceed the speed limit most everywhere in a 1.8L Corolla. Except when I am going uphill in the mountains. Then, I need a larger engine both for climbing and for dealing with...
Essentially, that is correct but instead of thinking about "weight of air", think about density, the mass per unit of volume. Warm air has lower density than cold. And, if you've ever seen a hot air balloon being filled, you'll understand that air isn't actually expelled from the bottom. This...
Folks, if I get the OP, he is essentially asking what is the lifting capacity of a balloon which has a perfect vacuum instead of being filled with hydrogen or helium. Assuming one could create a shell capable of sustaining the vacuum without collapsing, the vacuum wins... for a given volume of...
You don't have enough information, simply taking a picture of a moving vehicle to computer its speed. In its simplest form the vehicle is moving directly towards you, eliminating all the more complex equations.
Consider this thought experiment. You put a piece of poster board at one end of a...