$|1)$

A rectangular conducting loop of sides $50$ cm by $15$ cm is pushed into a region of flux density $1\mathrm{.}2$ T oriented to maximize the flux. The short edge is being pushed and a constant speed is achieved. The resistance of the loop is $R=0\mathrm{.}12.$ If the loop dissipates energy at a rate of $2\mathrm{.}3$ mW $,$ what is the speed?

Known's