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Physics / Physics with MasteringPhysics 4 / Chapter 32 / Problem 8P

Physics with MasteringPhysics | 4th Edition | ISBN: 9780321541635 | Authors: James S. Walker

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Suppose a marble with a radius of 1.5 cm has the density

Chapter 32, Problem 8P

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QUESTION:

Problem 8P

Suppose a marble with a radius of 1.5 cm has the density of a nucLeus, as given in Example 32–2. (a) What is the mass of this marble? (b) How many of these marbles would be required to have a mass equal to the mass of Earth?

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QUESTION:

Problem 8P

Suppose a marble with a radius of 1.5 cm has the density of a nucLeus, as given in Example 32–2. (a) What is the mass of this marble? (b) How many of these marbles would be required to have a mass equal to the mass of Earth?

ANSWER:

Step 1 of 3

(a)

Here we need to calculate the mass of the marble. The marble has the radius $r=1.5\ cm=0.015\ m$ with a density of nucleus $\rho{}=2.3\times{}1{0}^{17}kg/{m}^{3}$ .

The density is given by,

$\rho{}=\frac{m}{V}$

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