At Westonci.ca, we connect you with the answers you need, thanks to our active and informed community. Get detailed answers to your questions from a community of experts dedicated to providing accurate information. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Select the correct answer.

What is the nuclear binding energy for uranium-238 in joules? Assume the following:
Mass defect [tex]$= 3.2008 \times 10^{-27}$[/tex] kilograms
Use [tex]$E = m c^2$[/tex], with [tex]$c = 3 \times 10^8 \, \text{m/s}$[/tex]

A. [tex]$0.28807 \times 10^{-12}$[/tex] joules
B. [tex]$2.8807 \times 10^{-12}$[/tex] joules
C. [tex]$2.8807 \times 10^{-10}$[/tex] joules
D. [tex]$2.8807 \times 10^{-8}$[/tex] joules
E. [tex]$3.2008 \times 10^{27}$[/tex] joules


Sagot :

To find the nuclear binding energy for uranium-238, we need to use Einstein's mass-energy equivalence formula:
[tex]\[ E = mc^2 \][/tex]

Given:
- Mass defect \( m = 3.2008 \times 10^{-27} \) kg
- Speed of light \( c = 3 \times 10^8 \) m/s

First, we substitute the given values into the formula:
[tex]\[ E = (3.2008 \times 10^{-27} \, \text{kg}) \times (3 \times 10^8 \, \text{m/s})^2 \][/tex]

Let's calculate \( c^2 \) first:
[tex]\[ c^2 = (3 \times 10^8 \, \text{m/s})^2 = 9 \times 10^{16} \, \text{m}^2/\text{s}^2 \][/tex]

Now, multiply the mass defect by \( c^2 \):
[tex]\[ E = 3.2008 \times 10^{-27} \, \text{kg} \times 9 \times 10^{16} \, \text{m}^2/\text{s}^2 \][/tex]
[tex]\[ E = 3.2008 \times 9 \times 10^{-27 + 16} \, \text{J} \][/tex]
[tex]\[ E = 28.8072 \times 10^{-11} \, \text{J} \][/tex]
[tex]\[ E = 2.88072 \times 10^{-10} \, \text{J} \][/tex]

So, the nuclear binding energy \( E \) is \( 2.88072 \times 10^{-10} \) joules.

Examining the given choices:
A. \( 0.28807 \times 10^{-12} \) joules
B. \( 2.8807 \times 10^{-12} \) joules
C. \( 2.8807 \times 10^{-10} \) joules
D. \( 2.8807 \times 10^{-8} \) joules
E. \( 3.2008 \times 10^{27} \) joules

The correct choice is:
C. [tex]\( 2.8807 \times 10^{-10} \)[/tex] joules