Can somebody with these problems and show work and explanations so i can learn? you!
1) the sun (radius r = 695,990 km) can be modeled as an ideal black-body at 6000 k. calculate the earth’s surface temperature, assuming its temperature is uniform over its entire surface and that the sun is the only source providing energy to it (the mean sun-earth distance "d" is 149,597,871 km). assume the following models for the earth’s radiative properties: the rate at which a blackbody emits or absorbs energy is p=σat4, a is the surface area, t is the temperature of that area, and σ is the stefan-boltzmann constant.
(a) calculate the ideal black-body properties for the earth.
(b) the absorptance averaged over the sun’s energy spectrum is 0.7, and the earth’s averaged radiative emissivity is 0.6 due to greenhouse gases.
(c) how much change in the latter absorptance is required to increase the earth’s temperature by 2 oc?