Select your language

Suggested languages for you:
Log In Start studying!
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q. 25

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 1082

Answers without the blur.

Just sign up for free and you're in.


Short Answer

a. A nucleus has a radius of . What is the density, in , of the nucleus?

b. A neutron star consists almost entirely of neutrons, created when electrons and protons are squeezed together under immense gravitational pressure, and it has the density of an atomic nucleus. What is the radius, in km, of a neutron star with the mass of the sun ?

a. The density of the nucleus is


See the step by step solution

Step by Step Solution

Part (a) Step 1: Given Information 

We have given,

Radius of the nucleus =

We need to find out the density of the nucleus.

Step 2: Simplify 

The nucleus has nucleons, so its mass is

where is the atomic unit of mass (approximate mass of each nucleon).

The radius is .

Since, the volume of nucleus is

Then, The density is

Putting the numerical values in this equation then,

Part (b) Step 1: Given information

We have given,

A neutron star of density similar the density of nucleus.

We have to find the radius of star if it has mass same as sun.

Step 2: Simplify

We know that the mass of the sun is and the density of the nucleus in the .

Then the volume will be,

Then radius will be,

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.