{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# hw8 - two rates How might you reconcile the discrepancy 3...

This preview shows page 1. Sign up to view the full content.

Homework Problem Set No. 8 Due Wednesday, December 3, in class 1. Calculate the equilibrium temperature of the Earth. Assume that the Sun radiates 3.9 × 10 26 watts, that the albedo of the Earth is 0.3 and that the Earth is 1.5 × 10 11 m from the Sun. 2. Assume an adult human has a total surface area of 2 m 2 . If this person radiates as a 300 K blackbody, what is their rate of energy loss? At 2000 food calories/day (1 food calorie = 1000 calorie = 4200 joule), what is the rate of energy consumption. Compare the
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: two rates. How might you reconcile the discrepancy? 3. Assume a blackbody emits at temperature, T . At what frequency is U ν a maximum? 4. Calculate the number of square degrees in the sky or 4 π steradians. 5. The Sun approximately radiates like a 5780 K blackbody. If the Earth’s atmosphere is transparent to light between 320 nm and 900 nm, compute the fraction of the Sun’s energy that reaches the Earth’s surface. 1...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern