Does the choice of signs have any bearing on physical and chemical interaction?

Yes, the choice of signs can significantly impact physical and chemical interactions, particularly in the context of electrostatics and molecular interactions. For example, opposite charges attract while like charges repel, influencing how ions and molecules interact. Additionally, in chemical reactions, the orientation and polarity of molecules can determine reaction pathways and product formation. Thus, the signs associated with charges or dipoles are crucial for understanding and predicting interactions in chemistry and physics.