Concept explainers
(a)
The amount of energy released in the nuclear fusion.
(a)
Answer to Problem 34P
The amount of energy released in the nuclear fusion is
Explanation of Solution
Write the expression for the mass of water.
Here,
Write the expression for mass of hydrogen.
Here,
Write the expression for the mass of deuterium.
Here,
Write the expression for the number of deuterium nuclei in the mass
Here,
Two deuterium nuclei are used per fusion. The number of events take place in the fusion process is
Write the expression for the energy released per event.
Here,
Write the expression for the total energy in the fusion reaction.
Here,
Conclusion:
Substitute
Substitute
Substitute
Substitute
Substitute
Substitute
Therefore, the amount of energy released in the nuclear fusion is
(b)
The time required to last the available energy in the fusion reaction.
(b)
Answer to Problem 34P
The time required to last the available energy in the fusion reaction is
Explanation of Solution
Write the expression for the power consumption in the fusion.
Here,
Use equation (VII) to solve for
Conclusion:
Substitute
Therefore, the time required to last the available energy in the fusion reaction is
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Chapter 30 Solutions
Principles of Physics
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