Solar energy The Sun emits enormous amounts ofenergy. The power of the Sun is 3.9x 1026 W. This goes off uniformly in all directions, so the Earth receives a small fraction ofthis power. However, a small fraction of a large number is still a large number! To calculate the amount of power received by the Earth, we can treat the Earth as a circular disk with a radius of 6371 km (the Earth looks like a disk, from the Sun's perspective), and we can assume the energy from the Sun is distributed uniformly over the surface ofa sphere of radius 150 million km, which is the distance between the Earth and the Sun. @ Part (a) 0 Homework Answered DueOct24th,ll:59PM Using that information, what is the amount of power from the Sun that is incident on the Earth? (Note that a number like 1.23 x108 can be entered on Top Hat as 1.23e8) W Type your numeric answer and submit 2.13e23 X You are incorrect Answered - Incorrect 4attempts left ,4 Resubm\" 2" Open in We can estimate the annual energy needs of the USA to be 3 x 10- J, which accounts for all energy used in the transportation, residential, industrial, and government sectors. Part (b) Homework . Unanswered . Due Oct 24th, 11:59 PM Let's say that the USA is able, with solar panels, to tap into 0.01% of the energy coming from the Sun that is incident on the Earth, and converts this energy to electrical energy with an efficiency of 12%. How many days will it take for all these solar panels to generate the full annual energy requirements of the USA? days Type your numeric answer and submit Unanswered . 5 attempts left Submit