09_1090_hw2 - Physics 1090 Homework#2 Due Thursday...

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Unformatted text preview: Physics 1090 Homework #2 Due Thursday, September 10, 2:00 pm Reading assignment : Chapters 4, 5, 6 of the notes . 1. How high does the Sun get in the sky at midday? (The high point is close to 1 pm since we’re on EST.) By “how high” I mean an angle; which I want you to measure, by finding an upright object (like holding a pencil vertical) and marking off its shadow (easier to do with two of you!), then drawing a triangle. Or, you could angle a pencil towards the Sun so it has no shadow, then measure the angle it is making with the vertical (or horizontal—just be clear which one you mean in writing this up). Given that Charlottesville is 38 degrees from the Equator, what would that angle be on Midsummer’s day? On Midwinter’s day? (This is a lot easier to figure out if you have a globe to look at – try to find one!) 2. Finding the angular size of the moon: choose some suitable round object, such as a dime, quarter, a tennis ball, ping pong ball or whatever, and while you are looking at the moon, have your partner hold...
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This note was uploaded on 03/02/2012 for the course PHYS 109 taught by Professor Fowler during the Fall '08 term at UVA.

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