6. Borax was mined in Death Valley, California, during the nineteenth century. It was transported from the valley by massive88wagons, cach pulled by a team of 21 mules. Suppose each mule's power output was 746 W (about 1 hp). Ifin a certain time interval the total work done by the team on the wagon was 2.35 x 10'). how long was that interval of time?​