Physics, 18.09.2019 00:20 Snowinvain
Some scientists speculate that a severe ice age may have happened at least once over our planet’s history. they call this state an "ice-ball earth", and could have been forced by an imbalance in thermal radiation due to changes in greenhouse gas composition. the idea here is that a small ice age would have the efect of increasing albedo, causing a decrease in temperature, which further increases ice coverage, which in turn increases albedo even further. this process would continue until the surface of the earth is completely covered in ice, and the albedo at this point would be around 0.80. ignoring the greenhouse effect of the atmosphere in this scenario, what would the surface temperature of the earth be, in ◦c?
Answers: 2
Physics, 21.06.2019 16:10
Avoltage source vs = 10 v is in series with a resistor of 10 kohm. if the source transformation theorem is applied, what will the value of the current source be in ma ?
Answers: 1
Physics, 22.06.2019 10:10
In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?
Answers: 1
Some scientists speculate that a severe ice age may have happened at least once over our planet’s hi...
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