How are Kepler's Laws important to astronomy? What does it mean to say Keplers laws are empirical in nature? In a binary star system, a small white dwarf orbits a companion with a …

Why does the Milky Way Galaxy's nuclear bulge contain many red giants and supergiants as opposed to dwarfs and other stars? Would it be easier to measure a stars parallax from …

A boy makes a ruler with graduations in cm in it. To what accuracy this ruler can measure? How can this accuracy be increased? Which is longer on Venus, one day or one year? Why does …

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Healthy lungs contract downwards via the diaphragm to bring oxygen in, which passes through the alveoli to oxygentae the bloodstream while simulaneously releasing carbon dioxide to be …

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How many more gallons of soup does Chef Rossi need to make? Paul hit 33 tennis balls during practice. He hit 1/3 of them out of the tennis court. How many balls did he hit out of the court? …

For example, the orbit of a spacecraft about the sun has a perihelion distance of 0.5 AU and an aphelion of 3.5 AU., what is its orbital period? What is the relationship between longitude of …

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