09_1090_hw2

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 were 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 horizontaljust 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 Midsummers day? On Midwinters 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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