Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 11, Problem 2QAP
To determine
Whether the statement is true or false.
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Chapter 11 Solutions
Understanding Our Universe
Ch. 11.1 - Prob. 11.1CYUCh. 11.2 - Prob. 11.2CYUCh. 11.3 - Prob. 11.3CYUCh. 11.4 - Prob. 11.4CYUCh. 11 - Prob. 1QAPCh. 11 - Prob. 2QAPCh. 11 - Prob. 3QAPCh. 11 - Prob. 4QAPCh. 11 - Prob. 5QAPCh. 11 - Prob. 6QAP
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- Which formed first: hydrogen nuclei or hydrogen atoms? Explain the sequence of events that led to each.arrow_forwardWhat conditions are required before proton-proton chain fusion can start in the Sun?arrow_forwardWhat is a biomarker? Give some possible examples of biomarkers we might look for beyond the solar system.arrow_forward
- Add a fourth column to Table 13-1 and write in the atomic mass for each rows fuel element (see Appendix Table A-14). Review the curve of binding energy, Figure 8-15. Explain the trend of fusion time versus fuel atomic mass.arrow_forwardBoth the CNO cycle and the proton–proton chain combine 4 H nuclei to produce 1 He nucleus. Would those two processes release the same amount of energy per He nucleus produced?arrow_forwardMultiple Choice During the intermediate step of solar nuclear fusion a. 1 deuterium fuse with 1 proton making helium-3 b. 2 protons fuse together making helium-3 c. 2 deuterium nuclei fuse together making helium-3 d. 1 deuterium fuse with 1 proton making helium-4arrow_forward
- How and why does nuclear fusion happensarrow_forwardEven though neutral hydrogen is the most abundant element in interstellar matter, it was detected first with a telescope, not a visible light telescope. Explain why.arrow_forwardThe isotope carbon-14, 14/6C, is radioactive and has a half-life of 5 730 years. If you start with a sample of 1 000 carbon-14 nuclei, how many nuclei will still be undecayed in 25 000 years?arrow_forward
- Hydrostatic Equilibrium replies on which of the following to happen? (choose all that apply) Internal pressure from fusion to push out. The outward pull of gravity from the Sun O Gravity to pull inwards. The fusion of Helium into Carbon The start of the CNO Cycle in stars.arrow_forwardWhich particle has the largest mass? and How do nuclear decay reactions help explain the difference in the mass of the proton and neutron?arrow_forwardThe sun’s energy comes from nuclear reactions that fuse lighter nuclei into heavier ones, releasing energy in the process. The solar fusion process begins when two protons (the nuclei of hydrogen atoms) merge to produce a deuterium nucleus. Deuterium is the “heavy” isotope of hydrogen, with a nucleus consisting of a proton and a neutron. To become deuterium, one of the protons that fused has to turn into a neutron. Our interest for now lies not with the nuclear physics but with the conditions that allow fusion to occur. Before two protons can fuse, they must come into contact. However, the energy required to bring two protons into contact is considerable because the electric potential energy of the two protons increases rapidly as they approach each other. Fusion occurs in the core of the sun because the ultra-high temperature there gives the protons the kinetic energy they need to come together. a. A proton…arrow_forward
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