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Oct 08, 2023 253 likes •321 views

Astro 1: Introductory Astronomy http://apod.nasa.gov/apod/ap050830.html David Cohen Spring 2014 Class 7: Tuesday, February 11 The Earth moves in its (nearly) circular orbit it goes around the Sun once in a year (3.15 X 10 7 s) 1 Astronomical

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Astro 1: Introductory Astronomy

David Cohen

Class 7: Tuesday, February 11

Spring 2014

http://apod.nasa.gov/apod/ap050830.html

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The Earth moves in its (nearly) circular orbit

it goes around the Sun once in a year (3.15 X 107 s) 1 Astronomical Unit (A.U.) = (1.50 X 1011 m)

How fast does the Earth move?

How long does it take the Earth to move a distance equal to its own diameter?

you do not need any of the physics from Ch. 4

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Cavendish Experiment: for measuring the strength of gravity (G)

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