Answers edited by Allex Spires

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• Question #b09e8
  
• Question #b2296
  
• A 1750 kg weather satellite has a gravitational potential energy of 169,311,000 J. How high above the earth's surface is the satellite?
  
• Question #ca87c
  
• What kind of interactions are described by the Standard Model?
  
• My teacher told me that vacuum contains nothing.my question is that space is vacuum and energy. Plus energy doesn't need a medium to travel through. so why doesn't energy go and occupy vacuum? If it has already then if vacuum a type of energy?
  
• Question #a6a30
  
• How does the term wave-particle duality of light relate to electromagnetic waves?
  
• Question #5234a
  
• Why do scientists prefer the SI units over the old English system of measurement?
  
• Question #229c3