ASTRON 2B03 Midterm: ASTRON 2B03 Lecture : midsolutions
13 Feb 2019
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Neutrons, protons, valence electrons, protons and neutrons, none of the above, an element"s atomic number is equal to its number of, you and your friend recede from each other in spacecraft in deep space. From your frame of reference, your friend is receding at a speed of 0. 9c. Person a"s clock to be running fast: person a observes person b"s clock to be running fast and person b observes. Person a"s clock to be running slowly: person a observes person b"s clock to be running fast and person b observes. Person a"s clock to be running fast: something else, certain regions viewed with optical telescopes appear black, like the horsehead nebula in orion. Star a is 20 light-years from the sun while star b is 80 light-years from the sun. Hubble"s law indicates that: a spaceship moves by you at a high speed.
