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The power output of the Sun is $4 \times 10^{26} \mathrm{W}$ .(a) If 90$\%$ of this is supplied by the proton-proton cycle, how many protons are consumed per second? (b) How many neutrinos per second should there be per square meter at the Earth from this process? This huge number is indicative of how rarely a neutrino interacts, since large detectors observe very few per day.

a. $5.39 \times 10^{38}$b. $9.55\times 10^{14} / \mathrm{sm}^{2}$

Physics 103

Chapter 32

Medical Applications of Nuclear Physics

Nuclear Physics

Hope College

University of Sheffield

University of Winnipeg

Lectures

02:26

In physics, nuclear physic…

08:29

In physics, nuclear proper…

03:41

The power output of the Su…

08:05

The proton-proton cycle co…

02:41

(a) Calculate the rate at …

04:21

Energy reaches Earth from …

06:29

02:21

The proton-proton cycle re…

06:53

06:14

The Sun radiates energy at…

04:43

03:04

The sun produces energy by…

04:15

A The energy flux carried …

04:12

The effective $Q$ for the …

03:18

The sun radiates energy at…

02:53

05:02

07:52

The Sun produces energy at…

$\bullet$ The sun produces…

03:52

Power of sunlight on Earth…

09:06

The Evaporating Sun The Su…

no problem with 35 intact. A study to in this a problem. It is said that the power output over song is this number. Is this waas in It means that it will release this number or what draws in one second So And it asked two questions Who? The first question is if 90% All this is supplied by the pro TEM Proto Psycho. So then was ah, the number of protons at a concealed within one second. If 90% is produced by this energy circle, they need to know how many Homan energy is. How many energies to relieve the biting cycle from previous calculation also from the tax The book of you know that energy forthis cycle is 26.5 American electoral votes. So home. So if 90% 0 energy off the funnies. Surprised by this reaction that you one second this reaction should release forehands 10 to 26 times 90% to us and we use this number to the wired. The energy released support cycle between 26.7 mega electoral votes on B company the Toad roses This number times one pawn the six times 10 to the minus. So it iss trough, and this is a number of reaction off the vehicle. This number Eco's one point of 35 times 10 to 38 at a U one cycle. They see that we consume the four protons, So the number of protons consumer is one point of 35 times 10 to the 30 ace. Times four, which is fire. Pull the 39 times 10 to the city ace and for probably be asked us that as that. How many neutrinos per second is eerie as the US and escort thirties have wronged this poor theft? So the number over your trainers and you know that is a number or neutrinos put your stuff from the psycho is two times two times the number or the reaction. So the number on your who knows is one point. So do you. Five times 10 to 38 times to which is 2.7 times, tend to 38. This is the number on your journals, and the songs of Surface is here, and we know that the distance from the Earth to the song it's one point of five times 10 toe. Eskil o meters. So the dude who knows that he already is your he feels into the vacuum and then eventually later we'll go to the sun. So we needed to catch. So we need to calculate the surface every year out of the rough is ascend her Ever thought so for pi Times are squarely beaches 1.5 temps tin to Ace Kilo Need hers square This number me This number is 2.83 times 10 to the 20 Sir, That square meters and this number off Nutritionals real thief youth will distribute you were evenly and the surface so permit her And his ah of the surface of the earth is 2.7 times 10 to the 30 ace. Oh, what? 2.8. His three times 10 to 23 this ecos nyquil in the 55 times 10 to the 14th

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