PHYS 1000 Lecture 8: Chapter 8 – Moons, Rings, and Plutoids

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lilacwoodchuck792

7 Oct 2020

School

University of Windsor

Department

Physics

Course

PHYS 1000

Professor

Mr.Mark Lubrick

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All four jovian planets have extensive moon systems, and more are continually being discovered. We split them into three groups based on the diameter: The formation of jupiter and its moon is a reference of how the sun brought together the solar system. Io, europa, ganymede, callisto are the big moons of jupiter. Io and callisto are simplistic interiors and ganymede and europa are more complex interiors and may have water. Io is the innermost of jupiter"s moons and the most geologically active object in the solar system. It has many active volcanoes, and its surface can be changed in a few weeks. Io has no craters; they fill in too fast youngest surface of any solar system object. The tidal forces are huge, and provide the energy for the volcanoes. Europa has few craters; surface is water ice, possibly with liquid water below. Tidal forces stress and crack ice; water flows, keeping the surface relatively flat.

Related Questions

why do jovian planets bulge around the equator, that is, have a "squashed" appearance?

A) They are much more massive than the terrestrial planets.

B) Their large systems of moons and rings gravitationally attract the mass around the equator more.

C) Their rapid rotation flings the mass near the equator outward.

D) Their internal heat sources exert a pressure against the sides of the planets.

E) all of the above

brownbuffalo217

Chapter 8, problem 64 of Essentials of University Physics Vol.1,Richard Wolfson.

For a circular orbit around a massive gravitating body, the speeddepends on the radius according to Equation 8.3; for ellipticalorbits, the speed varies according to the equation Vsquared=2GM{(1/r)-(1/2a)}, where r is the distance from the massivebody and a is the semi major axis of the ellipse(i.e., half the sumof the closest and farthest distances). A satellite can betransferred from one circular orbit (at radius r1) to a higherorbit (at r2) by boosting the circular speed v1 at r1 to theappropriate speed for an elliptical orbit at r2 to the circularspeed v2. This is called a Hohmann transfer.

a) How much energy is required for the first boost in such atransfer to take a 250 kg satellite from a circular orbit at a 400km altitude to the altitude of a geosynchronous orbit?
b) How much energy is required for the second boost?
c) Check that the sum of your answers to parts (a) and (b) equalsthe difference in the total energies in the two circularorbits.

PHYS 1000 Lecture 8: Chapter 8 – Moons, Rings, and Plutoids

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Physics: Principles with Applications

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