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Homework1

# Homework1 - Homework#1 Gravity and kinetic theory of gases...

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Homework #1: Gravity and kinetic theory of gases. Please cite your sources wherever applicable, for instance, when looking up masses of planets, stars, etc. Give your answer in SI units, as well as units that are more “useful,” e.g. instead of writing 86,400 seconds, you can also write 1 day. 1. Using physical data for Uranus and its moon Miranda, answer the following questions: a) What is the mass of Uranus? b) What the magnitude of Miranda’s acceleration due to its orbital motion around Uranus? c) What is the acceleration due to gravity at Miranda’s surface? (i.e. g for miranda, where Earth’s g = 9.8 m/s 2 ) d) Do the answers to parts b and c suggest that an object released 1 m from the Uranus-facing surface of Miranda will fall “up”? Explain. 2. Look up physical data for the star 70 Virginis, and use these data in this problem. There is a large planet (mass = 1.3 x 10 28 kg) now known to orbit this star. The planet is attracted to this star by a force of 3.3 x 10 26 N, when their centers are separated by a distance equal to the semimajor axis of the planet’s orbit.

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Homework1 - Homework#1 Gravity and kinetic theory of gases...

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