Consider the following simple model to describe solar radiation incident on the earth, in which the atmosphere is included. a fraction f of the incident solar flux is absorbed 12 by the atmosphere and a fraction a is reflected, the rest being absorbed by the earth. assume that the only heat transfer to the atmosphere from the earth is by radiation and that f-0.25 and 0.3. find the temperature t, of the surface of the earth for radia tive equilibrium.

How many atoms are in 1.4 mil of phosphorus trifluoride (pf3)

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.