If an astronaut travels 900,000 km from earth and fires a bullet pointing towards earth by standing opposite to the sun ? (the bullets speed is 300miles per hour)a)find the distance between the man and the earth b)find the distance travelled by the astronaut in space when he fires bullet
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Orbital debris (duh BREE) is "junk" that is circling Earth. It is pieces from spacecraft. Humans have been launching objects into space for more than 50 years. Most of those objects have fallen back to Earth. A piece of debris falls back to Earth about once a day. These objects either land or burn up in the atmosphere. Most objects that return to Earth end up in water, since it makes up 70 percent of Earth's surface. But many of the objects sent into space are still in orbit around Earth.
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When soap is dissolved in water it forms a colloidal suspension. In this colloidal suspension, the soap molecules cluster together to form micelles and remains radially suspended in the water with the hydrocarbon end towards the centre and the ionic end directed outward.
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