if f=mc squared what is m=?
Welcome to the PF.
Could you please be more specific? Where did you see that equation?
If instead you mean the equation E = mc^2, then m is mass in that equation.
If you mean how to "solve for m", because m is multiplied by c^2, and you want to get m by itself, divide both sides by c^2. From E= mc^2, m= E/c^2.
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