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Why cant the same planet have lots of mass and density?

We think it can. The earth's average density is more than 5.5 times the density of water, which we think qualifies as "lots of density". Also, the earth has a mass of 5,970,000,000,000,000,000,000,000 kilograms, which we really think is lots of mass.


If a giant planet has an average radius 14 times that of the earth and a mass 681 times that of the earth what is the ratio of the new planets density to the earth's density?

Volume increases with the Cube of the radius, so an easy way to compute the volume of the giant planet is to simply take the ratio of the radius Giant Planet: Earth and raise it to the 3rd power.Since these planets are the same shape (Spherical) this ratio is accurate enough for our purposes. In the case of an object that is oblate (like Saturn or Jupiter), one can still calculate the volume accurately by taking the Equatorial Radius squared and multiplying it by the Polar Radius.In this given case the volume of Giant Planet = 14 x 14 x 14, or 2,744x that of Earth.Since Mass = 681x that of Earth, Density = 681/2744 = 0.248 of Earth's (just a little under one quarter).You could go one step further to calculate the density of this object by multiplying the density ratio by Earth's density (5.515x water) - so Giant Planet's density = 1.369 grams/cm3.


Saturn?

The sixth planet from the sun and the second-largest planet in our solar system. It is a gas giant with an average radius of about nine-and-a-half times that of Earth. It has only one-eighth the average density of Earth, but is over 95 times more massive. Saturn has a pale yellow hue due to ammonia crystals in its upper atmosphere.


How many miles is planet Earth from planet Jupiter?

About 5,2 times that average distance from the Earth to the Sun (or 5,2 AU)


What is Uranus diameter compared to the Earth?

The equatorial diameter of the planet Uranus is 51,118 km(31,763 miles). The equatorial diameter of the planet Earth is 12,576 km (7,926 miles).Because of its thicker atmosphere, Uranus is therefore 4 times as wide as Earth, and its volume 63 times that of Earth. However, its much lower average density means that Uranus has only about 14 times Earth's mass.


What planet has a force of gravity with 2.54 times that of Earth?

Jupiter has approximately that surface gravity.


How does the density of the sun compare to the density of the earth?

Earth's density: 5.515 g/cm^3 Sun's density: 1.408 g/cm^3


How many sun's away is the earth to the sun?

The distance of planet earth from the sun is an average of about 100 times the sun's diameter.


What is the diameter of earth compared to Uranus?

The equatorial diameter of the planet Uranus is 51,118 km(31,763 miles). The equatorial diameter of the planet Earth is 12,576 km (7,926 miles).Because of its thicker atmosphere, Uranus is therefore 4 times as wide as Earth, and its volume 63 times that of Earth. However, its much lower average density means that Uranus has only about 14 times Earth's mass.


How do Jupiter's density and period of rotation compare to Earth's?

Jupiter is less dense and has a shorter period of rotation.


What planet is 300 times size of earth?

No planet is. Jupiter, however, is 318 times the mass of Earth.


Which planet has an extremely low density atmosphere?

Venus has an extremely low density atmosphere that is composed mainly of carbon dioxide, with trace amounts of water vapor and sulfuric acid. The atmospheric pressure on Venus is about 92 times that of Earth's, creating a dense, thick atmosphere.