The pitch of a note refers to how high or low a sound seems to a listener. It is determined by the frequency of the sound wave, or the number of waves that pass by a point in a given amount of time.
The tension in a vibrating string, the mass of a vibrating string, and the amplitude of sound wave do not directly affect the pitch of a note. However, they can affect the volume (loudness) and quality (timbre) of the sound, which can influence our perception of the pitch.