Power and energy associated with odd character in fact (5)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

E (abbreviation for energy), after F OR C (a choice of the odd-numbered characters in F[a]C[t]). Physicists will no doubt insist that force and power are two separate things, but in common non-scientific usage the two terms can be used in the same way.