A 4 kg block ls placed on top of a long .12 kg block, which is accelerating along a smooth horizontal table at `a= 5.2 m//s^(2)` under application of an external constant force. Let minimum, coefficient of friction between the two blocks which will prevent the 4 kg block from sliding is `mu`, and coefficient of friction between blocks ls only half of this minimum value. of, (i.e., `mu//2`). Find the amount of heat (in joules) generated due to sliding between the two blocks during the time in which. 12 kg block moves 10 m starting from rest