Awater holding tank measures 105 m long, 40m wide, and 11m deep. traces of mercury have been found in the tank, with a concentration of 60mg/l. what is the total mass of mercury in the tank?

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f