http://digfir-published.macmillanusa.com/college_physics_bubble_equation/bubble_ch22_eq11_ch25.html
Chapter
25. Speed of light in a vacuum (22-11)
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http://digfir-published.macmillanusa.com/college_physics_bubble_equation/bubble_ch22_eq11_ch25_dlap.xmlDLAP questions5312a2bd757a2e8e6c000000