Help Contact For teachers and institutes

Mock Tests Classes

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Prepare for an Exam
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

The multiplication factor of a reactor core is exactly… | StemPy Lab

Quizzes
The multiplication factor of a reactor core is exactly 1. Which statement is correct?

PhysicsMediumHigh School (11–12)Modern Physics

Created by StemPy Lab

The multiplication factor of a reactor core is exactly $1$ . Which statement is correct?

← All Quizzes

← A reaction between a projectile of mass number 2 and a target nucleus of mass number 14 at rest has Q = -3.4 MeV. Take the mass numbers as the masses. What is the least kinetic energy of the projectile that can make the reaction happen?A small research source gives 80 W of heat from fission. Each fission releases 200 MeV, with 1 MeV = 1.602 × 10⁻¹³ J. How many fissions take place each second? →

More onModern Physics

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

Compared with the fission of uranium-235, the fusion of deuterium and tritium gives, for the same…Hard
A nuclear power plant makes 520 MW of heat for one year (3.156 × 10⁷ s). How much mass is turned…Hard
Which nuclei slow a fast neutron most effectively when it collides with them?Hard
Helium-3 and deuterium react to give helium-4 and a proton. The atomic masses are 3.016029 u…Medium
A small research source gives 80 W of heat from fission. Each fission releases 200 MeV, with 1 MeV…Medium

All questions on this topic →

Problems on this topic

A fusion plant makes 500 MW of heat from the reaction ²H + ³H → ⁴He + n, which releases 17.59 MeV…Hard
The Sun radiates 3.8 × 10²⁶ W. Find the mass that is turned into energy each second and in one year…Medium
A deuteron (Z = 1, A = 2) and a triton (Z = 1, A = 3) must touch before the nuclear force can act…Medium
A neutron of mass number 1 and kinetic energy 2.0 MeV hits a stationary nucleus of mass number a…Hard

All problems on this topic →