**Star Formation and Lifetimes** Page 120, Question 7A star with twice the mass of the Sun would have a rate of nuclear fusion that is ________ the rate of fusion in the Sun.- a. less than- b. a little more than- c. twice- d. more than twice**Explanation:**This question explores the relationship between a star's mass and its rate of nuclear fusion. A star with greater mass generally has a much higher rate of fusion due to the increased pressure and temperature in its core, resulting in more rapid fusion processes. The options suggest possible relations compared to the Sun's fusion rate.

In stars higher mass leads to higher compression. Which results higher Central density and temperature. Which leads to more fusion. The the energy produced is proportional to the fusion. It also proportional to the luminosity. So fusion is also proportional to the luminosity.If M is mass the luminosity is L= M3.5 . Means if Mass doubles the luminosity becomes 23.5 = 11 times. Means the fusion also increase at similar rate. Means the rate of fusion is more than twice. Answer is option d.

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"Star Formation and Lifetimes" pg. 120, question 7 A star with twice the mass of the Sun would have a rate of nuclear fusion that is the rate of fusion in the Sun. a. less than b.a little more than c. twice d.more than twice

"Star Formation and Lifetimes" pg. 120, question 7 A star with twice the mass of the Sun would have a rate of nuclear fusion that is the rate of fusion in the Sun. a. less than b.a little more than c. twice d.more than twice

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.

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