Mathematics, 27.10.2021 14:00 ayoismeisalex
The total radiation energy Eemittedby a heated surface per unit area varies as the fourth powerof its absolute temperature T. The temperature is 6000 K atthe surface of the sun and 300 K at the surface of the earth.(a)How many times more radiation energy per unit area isproduced by the sun than by the earth?(b)The radius of the earth is 3960 mi and the radius of thesun is 435,000 mi. How many times more total radia-tion does the sun emit than the earth?
Answers: 3
Mathematics, 21.06.2019 14:00, Dweath50
(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?
Answers: 2
Mathematics, 21.06.2019 17:00, figueroajorge8291
Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?
Answers: 1
The total radiation energy Eemittedby a heated surface per unit area varies as the fourth powerof it...
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