Astro10_HW01

Astro10_HW01 - Astronomy 10 Fall 2008 Homework 1 40 points...

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Astronomy 10, Fall 2008 Homework 1 - 40 points total Due to the boxes in the basement of Campbell Hall by 5pm Tuesday, September 9 . Be sure to include your name, SID, Section Number, and GSI name on your homework, and staple it together. 1. The Art of Estimation (7 points) Make an order-of-magnitude estimate of each of the following quantities. In order to get credit, you must show your work and explain any and all assumptions you make. We are more interested in seeing the logic behind how you get your estimates than the numbers you get in the end. (a) What fraction of the Earth’s total mass consists of human beings? (2 points) (b) How many basketballs would it take to Fll Evans Hall? (2 points) (c) How many times does a human’s heart beat over a lifetime? How many times does a mouse’s heart beat in its life? (3 points) 2. Tracking the Sun (6 points) Describe the apparent motion of the Sun through the course of a day as it would be observed from the ±owing locations and times. Try to be as quantitative as possible (i.e. specify angles if you can). (a) The north pole on the day of the Summer Solstice. (2 points)
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This note was uploaded on 07/09/2010 for the course ASTRO 10 taught by Professor Norm during the Fall '06 term at Berkeley.

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Astro10_HW01 - Astronomy 10 Fall 2008 Homework 1 40 points...

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