dancooperWater circulation and consumptionThe global water consumption is 4,000 billion cubic meters per year.Mar 29, 2020Mar 29, 2020
dancooperWhat does Sharp 500 Index mean?The Sharp 500 Index represents the total market capitalization of the 500 important US companies. If Sharp 500 Index increases by one…Nov 6, 2019Nov 6, 2019
dancooperRelationship between orbital radii and orbital periods of planets in Solar SystemThe orbital radius of Mars is 1.5 times that of the Earth, so the orbital period of Mars is 1.5 * sqrt(1.5) = 1.5 * 1.2 = 1.8 times that…Nov 6, 2019Nov 6, 2019
dancooperRelationship between carbon dioxide and fuel consumptionSo far, there are about 3200 billion metric tons of carbon dioxide in the air now. Over the past 400,000 years, the weight of carbon…Nov 2, 2019Nov 2, 2019