Register to reply

Nuclear energy

by frozen7
Tags: energy, nuclear
Share this thread:
Jan6-06, 12:22 AM
P: 167
15. The following fusion reaction takes place in the sun and furnishes much of its energy:
, where is a positron. How much energy is released as 1kg of hydrogen is consumed? The masses of 1H, 4He, and are, respectively, 1.007825, 4.002604, and 0.000549 u, where atomic electrons are included in the first two values

I do it by finding the difference of mass between the parent nucleus and daughter nucleus and multiply with 931.5MeV. The answer I got is 25.708MeV,which is actually different with the given answer, 6 x 10^14 J. Why?
Which part I have done wrongly?
Phys.Org News Partner Science news on
Flapping baby birds give clues to origin of flight
Prions can trigger 'stuck' wine fermentations, researchers find
Socially-assistive robots help kids with autism learn by providing personalized prompts
Jan6-06, 06:18 AM
P: 398
This might give you a clue:

[tex]^{1}_{1}H+^{1}_{1}H\xrightarrow~^{2}_{1}H + p[/tex]

Try and use standard value for isotopes not the average.

Register to reply

Related Discussions
Potential nuclear energy General Physics 2
Nuclear bindng energy Introductory Physics Homework 5
Nuclear Energy Introductory Physics Homework 1
Radiation and nuclear energy Introductory Physics Homework 5
Nuclear energy General Physics 25