query: How does energy exist if it can't be created or destroyed?
positive_passages.docid: 123654
positive_passages.text: How can energy be useful when it is 'abstract'?
negative_passages.docid: 115200
negative_passages.text: Why does energy have to be emitted in quanta?
negative_passages.docid: 13096
negative_passages.text: Is a spontaneous decrease in entropy *impossible* or just extremely unlikely?
negative_passages.docid: 20680
negative_passages.text: Does infinity exist in physical systems?
negative_passages.docid: 64286
negative_passages.text: How can gravitions exist without violating GR?
negative_passages.docid: 107031
negative_passages.text: Is conservation of energy only for isolated systems?
negative_passages.docid: 82061
negative_passages.text: How do chemical propulsion systems not break the law of conservation of energy?
negative_passages.docid: 116033
negative_passages.text: Energy conservation limited by uncertainty principle
negative_passages.docid: 140005
negative_passages.text: How will a particle with energy less than $V_{\rm min}$ behave?
negative_passages.docid: 45669
negative_passages.text: What is behind the definitions of work and energy?
negative_passages.docid: 38293
negative_passages.text: How does the formation of a solar system not break the second law of thermodynamics?
negative_passages.docid: 156614
negative_passages.text: If air cannot conduct electricity, how can lightning happen?
negative_passages.docid: 38703
negative_passages.text: Do virtual particles actually physically exist?
negative_passages.docid: 80785
negative_passages.text: What is potential energy truly?
negative_passages.docid: 94778
negative_passages.text: Why can't I do this to get infinite energy?
negative_passages.docid: 144698
negative_passages.text: Why do many people say that virtual particles do not conserve energy?
negative_passages.docid: 123948
negative_passages.text: Why do I not see evidence of discrete energy in the spectrum?