You can activate multiple psionic feats at the same time.
Prerequisites
Psionic Weapon and any one other feat with Psionic Weapon as a prerequisite, base attack bonus +6.
Benefit
When you expend your psionic focus to activate Psionic Weapon or a feat with Psionic Weapon as a prerequisite, you may choose to activate one additional such feat, gaining the benefits of both feats. For example, you could epends your psionic focus to benefit from both Psionic Weapon and Deep Impact on a single attack.
You may only gain the benefits of this feat once per round, even if you regain your focus during the round or have more than one psionic focus.