/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q. 71 The nuclear reaction that powers... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 36: Q. 71 (page 1062)

The nuclear reaction that powers the sun is the fusion of four protons into a helium nucleus. The process involves several steps, but the net reaction is simply 4p鈫�He4+Energy. The mass of a proton, to four significant figures, is 1.673脳10-27kg, and the mass of a helium nucleus is known to be 6.644脳10-27kg.

a. How much energy is released in each fusion?

b. What fraction of the initial rest mass energy is this energy?

Short Answer

Expert verified

a. The energy will released is E=4.14脳10-22J.

b. fraction percentage is0.68%.

Step by step solution

01

Part (a) Step 1: Given information

We have given,

reaction,

4p鈫�He4+Energy

Mass of proton =1.673脳10-27kg

Mass of helium =6.644脳10-27kg

02

Simplify 

The mass difference is ,

鈭�m=(4脳1.673脳10-27kg)-(6.644脳10-27kg)鈭�m=0.048脳10-27kg

Then, the energy will be,

E=鈭�mc2E=(0.048脳10-27kg)(3脳108)2 E=4.14脳10-22J

03

Part 9b) Step 1: Given information

We have given,

Mass of proton =1.673脳10-27kg

Mass of Helium =6.644脳10-27kg

We have to find the fraction of the initial rest mass energy.

04

Simplify

The initial rest mass energy is ,

4penergy=4脳1.673脳10-27kg脳c2

Then the fraction will be,

localid="1649944799947" fraction%=E4penergy脳100fraction%=0.048脳10-27kg4脳1.673脳10-27kg脳100fraction=0.68%

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

a. Derive a velocity transformation equation for uyand uy'. Assume that the reference frames are in the standard orientation with motion parallel to the x- and x鈥�-axes.

b. A rocket passes the earth at 0.80c. As it goes by, it launches a projectile at 0.60c perpendicular to the direction of motion. What is the particle鈥檚 speed, as a fraction of c, in the earth鈥檚 reference frame?

You are standing at x=9.0kmand your assistant is standing at x=3.0km.Lightning bolt 1strikes at x=0kmand lightning bolt 2strikes at x=12.0km.You see the flash from bolt 2at t=10渭sand the flash from bolt 1att=50渭s. According to your assistant, were the lightning strikes simultaneous? If not, which occurred first, and what was the time difference between the two?

A newspaper delivery boy is riding his bicycle down the street at 5.0m/s. He can throw a paper at a speed of 8.0m/s. What

is the paper鈥檚 speed relative to the ground if he throws the paper (a) forward, (b) backward, and (c) to the side?

A100m long train is heading for an 80cmlong tunnel. If the train moves sufficiently fast, is it possible, according to experimenters on the ground, for the entire train to be inside the tunnel at one instant of time? Explain.

A rocket is fired from the earth to the moon at a speed of 0.990c. Let two events be 鈥渞ocket leaves earth鈥� and 鈥渞ocket hits moon.鈥� a. In the earth鈥檚 reference frame, calculate 鈭唜, 鈭唗, and the space time interval s for these events.

b. In the rocket鈥檚 reference frame, calculate 鈭唜鈥�, 鈭唗鈥�, and the space time interval s鈥� for these events.

c. Repeat your calculations of part a if the rocket is replaced with a laser beam.
See all solutions

Recommended explanations on Physics Textbooks

Astrophysics

Read Explanation

Geometrical and Physical Optics

Read Explanation

Thermodynamics

Read Explanation

Nuclear Physics

Read Explanation

Dynamics

Read Explanation

Oscillations

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.