Radiation safety and nuclear energy

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960
Question 37
Easy

The moderator in a nuclear fission reactor slows down the neutrons released during fission so they can be captured by other uranium nuclei.

In a typical reactor:

  • the average speed of the fast neutrons immediately after fission is 1.5 × 107 m/s
  • the average speed of the slow (thermal) neutrons after passing through the moderator is 3.0 × 103 m/s

Calculate the average speed of the slow neutrons as a percentage of the average speed of the fast neutrons. Give your answer in standard form or as a decimal.

[2]

Radiation safety and nuclear energy Questions

  1. GCSE
  2. /Physics
  3. /Radiation safety and nuclear energy