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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Concept explainers
Question
Chapter 13, Problem 1QAP
To determine
The given statement is true or false.
Expert Solution & Answer
Answer to Problem 1QAP
True.
Explanation of Solution
The center of a high mass star is at a very high temperature and several nuclear reactions occurs inside the star. In some of the high mass star, hydrogen is fused into helium following carbon-nitrogen-oxygen cycle.
The CNO cycle uses four hydrogen and convert it into helium. The following reaction takes place during the process.
Conclusion:
Thus, the given statement is true.
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Students have asked these similar questions
Both 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?
Life on Earth is entirely owed to the colossal energy source that we call the Sun. The source of the energy is in the core of Sun where nuclear ___________ yields a great deal of energy by converting _____________ atoms into ______________ atoms. (Fill in the blanks.)
Question 6 options:
fusion; hydrogen; helium
fusion; uranium; barium
fission; helium; hydrogen
fission; proton; neutron
Why does helium fusion require a higher temperature than hydrogen fusion?
Chapter 13 Solutions
Understanding Our Universe
Ch. 13.1 - Prob. 13.1CYUCh. 13.2 - Prob. 13.2CYUCh. 13.3 - Prob. 13.3CYUCh. 13.4 - Prob. 13.4CYUCh. 13.5 - Prob. 13.5CYUCh. 13.6 - Prob. 13.6CYUCh. 13 - Prob. 1QAPCh. 13 - Prob. 2QAPCh. 13 - Prob. 3QAPCh. 13 - Prob. 4QAP
Ch. 13 - Prob. 5QAPCh. 13 - Prob. 6QAPCh. 13 - Prob. 7QAPCh. 13 - Prob. 8QAPCh. 13 - Prob. 9QAPCh. 13 - Prob. 10QAPCh. 13 - Prob. 11QAPCh. 13 - Prob. 12QAPCh. 13 - Prob. 13QAPCh. 13 - Prob. 14QAPCh. 13 - Prob. 15QAPCh. 13 - Prob. 16QAPCh. 13 - Prob. 17QAPCh. 13 - Prob. 18QAPCh. 13 - Prob. 19QAPCh. 13 - Prob. 20QAPCh. 13 - Prob. 21QAPCh. 13 - Prob. 22QAPCh. 13 - Prob. 23QAPCh. 13 - Prob. 24QAPCh. 13 - Prob. 26QAPCh. 13 - Prob. 27QAPCh. 13 - Prob. 28QAPCh. 13 - Prob. 29QAPCh. 13 - Prob. 30QAPCh. 13 - Prob. 31QAPCh. 13 - Prob. 32QAPCh. 13 - Prob. 33QAPCh. 13 - Prob. 35QAPCh. 13 - Prob. 36QAPCh. 13 - Prob. 37QAPCh. 13 - Prob. 38QAPCh. 13 - Prob. 39QAPCh. 13 - Prob. 40QAPCh. 13 - Prob. 41QAPCh. 13 - Prob. 43QAPCh. 13 - Prob. 44QAPCh. 13 - Prob. 45QAP
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- The two types of cycles proposed in the stars for fusion are ________ a) p-p cycle and p-e cycle b) p-p cycle and C-N cycle c) p-p cycle and p-C cycle d) p-p cycle and p-N cyclearrow_forwardHydrostatic 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_forwardThe CNO-IV cycle is a related cycle to the CNO-I cycle but is only seen on massive stars. It starts with an oxygen–18 nuclide and conducts the following steps: a hydrogen fusion with a gamma ray release, a hydrogen fusion with a release of an alpha particle, a hydrogen fusion with a gamma ray release, a positron emission, a hydrogen fusion with a gamma ray release, and a positron emission. Determine the nuclear reactions and draw a cycle that represents the CNO-IV cycle.arrow_forward
- H5. A star with mass 1.05 M has a luminosity of 4.49 × 1026 W and effective temperature of 5700 K. It dims to 4.42 × 1026 W every 1.39 Earth days due to a transiting exoplanet. The duration of the transit reveals that the exoplanet orbits at a distance of 0.0617 AU. Based on this information, calculate the radius of the planet (expressed in Jupiter radii) and the minimum inclination of its orbit to our line of sight. Follow up observations of the star in part reveal that a spectral feature with a rest wavelength of 656 nm is redshifted by 1.41×10−3 nm with the same period as the observed transit. Assuming a circular orbit what can be inferred about the planet’s mass (expressed in Jupiter masses)?arrow_forwardWhich of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, etc.) in a high- mass star is not true? A. As each stage ends, the core shrinks and heats further. B. Each successive stage creates an element with a higher atomic number and atomic mass number. C. As each stage ends, the reactions that occurred in previous stages continue in shells around the core. D.Each successive stage lasts for approximately the same amount of time.arrow_forwardOrder the following statements so that they make sense according to star birth stages 1.At this stage, energy moves to the surface primarily through convection. At the end of this stage, the photosphere's temperature can reach 3,000K 2.In this stage, nuclear fusion starts and the energy transport mechanism switches from convection to radiative diffusion 3.In this stage, nuclear fusion rate is high enough to balance out the rate of radiative energy escape the surface 4.During this stage, gravitational contraction causes its luminosity to decrease because the protostar gets smaller while its surface temperature stays the samearrow_forward
- How does the CNO cycle differ from the proton-proton chain? How is it similar?arrow_forwardSelect all of the statements about the main sequence stage in the life of a star that are TRUE: All stars spend the majority of their lives in the main sequence stage. Most stars lose a significant amount of mass while they are on the Main Sequence. Different stars spend a different amounts of time (number of years) in the main sequence stage, depending on the characteristics they were born with. Main sequence stars are rare in the Galaxy, so we are lucky to be living around one. During the main sequence stage, energy to power the star is provided by the fusion of hydrogen.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
- If you could run 5.9 kilometers at 8.4 km/hr, how much energy would you burn?This activity uses up energy at the rate of 350.8W.arrow_forwardH much energy is produced when the CNO cycle converts 1 kg of mass into energy? (Hint: Is your answer the same, or different, if the mass is fused by the proton-proton chain?)arrow_forward
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