21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 6, Problem 41QP
To determine

The angular resolution on looking at interstellar molecules using space VLBI.

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What is the ratio of the angular resolution limit of Keck to the angular resolution limit of HST? (Assume they are both observing at the same wavelength.)   [Compute the relevant ratio Keck/HST, express as a decimal, and enter below.] HST orbits at an altitude of 559 km above the Earth's surface. Assume its orbit is circular. Compute its orbital period in hours.   Compute its orbital speed (in km/s).
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What is the wavelength in meters observed with a frequency of (4.5x10^15)? Answer with 2 significant figures and it must be in scientific notation. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10 units
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