Chemistry

Chemistry, 10.10.2019 06:10, joeydjky

What is some evidence that earth's
center is denser than earth's surface?

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Biology, 31.08.2019 15:00, treaustin6978

How do the outer planets compare to the inner ones? a. larger and denser b. smaller and less dense c. smaller and denser d. larger and less dense (pretty sure its d. which is the correct position from the center of the solar system of the sun, earth, and moon during a lunar eclipse? a. moon, sun, earth b. sun, earth, moon c. earth, sun, moon d. sun, moon, earth

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Physics, 23.11.2019 05:31, wwwcarolynzouowficz

Ashaft is drilled from the surface to the center of the earth as in the example 12.10 (section 12.6), make the unrealistic assumption that the density of the earth is uniform. with this approximation, the gravitational force on an object with mass m, that is inside the earth at a distance r from the center, has magnitude fg=gmemr/r3e (as shown in the example 12.10) and points toward the center of the earth. part a derive an expression for the gravitational potential energy u(r) of the object-earth system as a function of the object's distance from the center of the earth. take the potential energy to be zero when the object is at the center of the earth. part b if an object is released in the shaft at the earth's surface, what speed will it have when it reaches the center of the earth? express your answer using two significant figures.

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What is some evidence that earth's
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