Menu

Recap - Inside the Sun

Part of the Optics, Waves and Modern Physics section of Coddy's Physics journey. Lesson 53 of 53.

challenge icon

Challenge

In the Sun, four protons end up as one helium-4 nucleus and two positrons. A proton is 1.007276 u, a helium-4 nucleus 4.001506 u, and a positron 0.000549 u. First find the mass that disappears, m_d, then the energy E given out, in MeV.

Try it yourself

All lessons in Optics, Waves and Modern Physics