Which characteristic of a vibrating body determines the (a) loudness (b) pitch of the sound produced by it?

-- The loudness of the vibration is determined by its amplitude.

-- The pitch of the vibration is determined by its frequency.

-- The amplitude and frequency of the vibration are determined by the material characteristics of the body that's vibrating, and by how much energy is used to start the vibrations.

uranium fissions/breaks up giving out energy and neutrons

explanation:

wheres the pic