A rectangular loop of sides 12cm and 5cm, with its sides parallel to the x-axis and y-axis respectively moves with a velocity of 5cm/s in the positive x axis direction, in a space containing a variable magnetic field in the positive z direction. The field has a gradient of $10^{-3} \mathrm{~T} / \mathrm{cm}$ along the negative x direction and it is decreasing with time at the rate of $10^{-3} \mathrm{~T} / \mathrm{s}$.. If the resistance of the loop is 6" " mΩ, the power dissipated by the loop as heat is $\times 10^{-9} \mathrm{~W}$. .