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Geostationary orbits: -have a time period of 24 hours -have an angular speed equal to that of the Earth - maintain above a fixed position on the Earth's surface at all times. Therefore, they are very good...

Quarks are the building blocks of protons and neutrons, as found in the nucleus of atoms. They are as far as we know, fundamental particles, but this could change in the future. There are 6 types, named u...

In basic terms, general relativity is based on Einstein's equivalency principle. It states that in a closed environment, there is no way of distinguishing between the effects of gravity and of a constant ...

H, (see Hubble's Law)

First realize if its length is now l/3 but its volume is constant its cross sectional area is 3a. Substitute those into the equation for resistance R=p(l/a) and you get (1/9)(p(l/a))= R/9