Chapter 25. Rest energy (25-21)

Question

UFERjxB4IAwzxnS3kZHgRcxd7Pfn27xB2VISXpvfHie79w2+Y5PFCVJ3ANiMJBis
{"title":"Rest energy of a particle","description":"Correct!","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,25,37,72\"}]"} {"title":"Mass of the particle","description":"Incorrect","type":"incorrect","color":"#ffff00","code":"[{\"shape\":\"rect\",\"coords\":\"125,40,173,73\"}]"} {"title":"Speed of light in a vacuum","description":"Incorrect","type":"incorrect","color":"#00ff00","code":"[{\"shape\":\"rect\",\"coords\":\"174,38,198,73\"}]"}

Question

fxGX1SVVVSvjokegrtcaHO4mdzLLiuWM
{"title":"Rest energy of a particle","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,25,37,72\"}]"} {"title":"Mass of the particle","description":"Correct!","type":"correct","color":"#ffff00","code":"[{\"shape\":\"rect\",\"coords\":\"125,40,173,73\"}]"} {"title":"Speed of light in a vacuum","description":"Incorrect","type":"incorrect","color":"#00ff00","code":"[{\"shape\":\"rect\",\"coords\":\"174,38,198,73\"}]"}

Question

bPc1Yg7xoR7yKjhmbmrt4oWiBz5cnkvqFSFY9UDw4ZQ=
{"title":"Rest energy of a particle","description":"Incorrect","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"poly\",\"coords\":\"82,133\"},{\"shape\":\"rect\",\"coords\":\"10,16,12,16\"},{\"shape\":\"poly\",\"coords\":\"144,22\"},{\"shape\":\"rect\",\"coords\":\"1,25,37,72\"}]"} {"title":"Mass of the particle","description":"Wrong","type":"incorrect","color":"#ffff00","code":"[{\"shape\":\"rect\",\"coords\":\"125,40,173,73\"}]"} {"title":"Speed of light in a vacuum","description":"Correct!","type":"correct","color":"#00ff00","code":"[{\"shape\":\"rect\",\"coords\":\"174,38,198,73\"}]"}

Review

The physical interpretation of Equation 25-21 is that mass and energy are equivalent, or that this mass is simply one possible manifestation of energy. Stated another way, the mass of an object is a measure of its rest energy content.