21ST CENT.AST.W/WKBK+SMARTWORK >BI<
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
6th Edition
ISBN: 9780393415216
Author: Kay
Publisher: NORTON
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Chapter 14, Problem 14QP
To determine

The production of energy from sun’s centre.

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The capture of too few solar neutrinos by Davis in the solar neutrino experiment   a. can be explained if the sun is not undergoing thermonuclear fusion of hydrogen in its core.   b. indicates that the sun’s core is much cooler than expected.   c. indicates that the sun’s core is much hotter than expected.   d. indicates that the sun’s core is convective.   e. is explained by none of the above.
2. Assume that the entire luminosity of the Sun is due to the PP chain reaction. The complete PP chain reaction converts 4 hydrogen nuclei into 1 helium nucleus, according to the following reaction: 4 H - He + 2e* + 2v. a. Estimate the amount of energy released by one complete reaction. b. Estimate how many of these reactions occur per second in the Sun, and how many neutrinos the Sun produces each second. c. Estimate the flux of neutrinos (in v's s' cm?) passing through the Earth.
It what layer of the sun does fusion occur? a. core b. radiative zone c. corona d. convective zone
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