Bubble Equation prototype

Question 1 of 3

Question

$\textbf{Speed of light}$ in a vacuum

{"title":"Energy","description":"no","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"67,26,120,76\"}]"} {"title":"Mass","description":"Wrong","type":"incorrect","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"165,30,201,72\"}]"} {"title":"Speed of light","description":"YEah","type":"correct","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"196,30,226,70\"}]"}

Question

$\textbf{Mass}$ of an object

{"title":"Energy","description":"no","type":"incorrect","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"67,26,120,76\"}]"} {"title":"Mass","description":"Yup","type":"correct","color":"#993300","code":"[{\"shape\":\"rect\",\"coords\":\"165,30,201,72\"}]"} {"title":"Speed of light","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"rect\",\"coords\":\"196,30,226,70\"}]"}

Question

$\textbf{Rest}$ $\textbf{energy}$ of an object

{"title":"Energy","description":"COrrect","type":"correct","color":"#99CCFF","code":"[{\"shape\":\"rect\",\"coords\":\"65,28,122,78\"}]"} {"title":"Mass","description":"Wrong","type":"incorrect","color":"#ffcc00","code":"[{\"shape\":\"rect\",\"coords\":\"158,19,196,74\"}]"} {"title":"Speed of light","description":"Incorrect","type":"incorrect","color":"#333300","code":"[{\"shape\":\"poly\",\"coords\":\"239,19,204,24,191,87,227,80,227,80,241,43,237,35\"}]"}

Review

In this equation $E$ represents energy, $m$ represents mass, and $c$ represents the speed at which light travels in a vacuum. But what the equation means is something deeper. In this book we’ll often write fundamental equations with explanations attached, such as this one.