**Question: Why is iron significant to understanding how a supernova occurs?**- **A.** Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made.- **B.** Supernovae often leave behind neutron stars, which are made mostly of iron.- **C.** The fusion of iron into uranium is the reaction that drives a supernova explosion.- **D.** Iron cannot release energy either by fission or fusion.**Explanation:**This question is focused on the role of iron in the process of a supernova. Iron plays a critical role because it is the most stable nucleus, and further fusion or fission does not release energy. In a supernova, once the core of a star is primarily iron, it cannot generate pressure through fusion reactions to counteract gravity, leading to the collapse of the star and a subsequent supernova explosion. Option D correctly highlights this aspect of iron's significance.

Answered: Image /qna-images/answer/9aa00786-5d1f-455c-ab16-b546f14f3609.jpg

Why is iron significant to understanding how a supernova occurs? A. Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made. B. Supernovae often leave behind neutron stars, which are made mostly of iron. C. The fusion of iron into uranium is the reaction that drives a supernova explosion. D. Iron cannot release energy either by fission or fusion.

Why is iron significant to understanding how a supernova occurs? A. Iron is the heaviest of all atomic nuclei, and thus no heavier elements can be made. B. Supernovae often leave behind neutron stars, which are made mostly of iron. C. The fusion of iron into uranium is the reaction that drives a supernova explosion. D. Iron cannot release energy either by fission or fusion.

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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