Tuesday
September 30, 2014

Homework Help: Physics

Posted by Sal on Friday, October 30, 2009 at 11:50am.

This is a very confusing question and I have no idea how to tackle it.

- In a nuclear reactor, neutrons released by nuclear fission must be slowed down before they can trigger additional reactions in other nuclei. To see what sort of material is most effective in slowing (or moderating) a neutron, calculate the ratio of a neutron's final kinetic energy to its initial kinetic energy,Kf/Ki , for a head-on elastic collision with each of the following stationary target particles. (Note: The mass of a neutron is ,m = 1.009u where the atomic mass unit,1u= 1.66x10^-27.

An Electron M= 5.49x10^-4 u = kf/ki
A Proton M= 1.007 u = kf/ki
A lead atom = 207.2 u = kf/ki?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Nuclear FIssion - How does nuclear fission create energy? Nuclear energy is ...
Japan's Nuclear Crisis - How does nuclear fission create energy? Nuclear energy ...
Chemistry - 42. Tell the function of the moderator and control rods in a nuclear...
PHYSICS - A nuclear reactor contains nuclei that fission when bombarded by slow ...
college physics - In a nuclear reactor, neutrons released by nuclear fission ...
chemistry - Describe what happens in a fission reaction. What is a commonly used...
Chemistry - Need help anwering this: 43. Explain how the fission can be slowed ...
Chemistry - Describe nuclear fission and write a nuclear equation to describe ...
physics - A nuclear reactor for producing neutron beams is refuelled with about...
Chemistry - The most abundant isotope of uranium,238U , does not undergo fission...

Search
Members