Concept explainers
The density of the white dwarf. Also, the density of the white dwarf that is larger than Earth’s density.
Answer to Problem 13P
The density of the white dwarf is
The density of the white dwarf is about
Explanation of Solution
Given:
Assume the mass of the Earth is
Assume the radius of the Earth is
Assume the mass of the white dwarf is equal to the mass of the Sun and is equal to
Assume the radius of the white dwarf is equal to the radius of the Earth and is equal to
Formula used:
Assume the planet is spherical in shape.
The expression for the volume ( V ) of the Planet (spherical shape) is,
Here, R is the radius of the sphere.
The expression for the density ( D ) of the planet is,
Here, M is the mass of the planet.
Calculation:
The volume of the white dwarf is,
The density of the white dwarf is,
The volume of the Earth is,
The density of the Earth is,
Divide equation (1) by equation (2).
Conclusion:
Thus, the density of the white dwarf is
Thus, the density of the white dwarf is about
Chapter 33 Solutions
Physics: Principles with Applications
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