Physics, 01.10.2019 00:00 alexishenning
Every year, proxima centauri, the closest star to the sun, is observed to move 1.5 arcseconds with respect to the background stars for six months, followed by a return to its original position over the course of the next six months. how far away is proxima centauri? [diameter of earth's orbit = 2 au (astronomical units)]?
Answers: 3
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An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?
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Which of the following reactions is a synthesis reaction? n2 + 3h2 → 2nh3 mgi2 + br2 → mgbr2 + i2 kclo3 → kcl + o2 hcl + naoh → nacl + h2o
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Every year, proxima centauri, the closest star to the sun, is observed to move 1.5 arcseconds with r...
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