A10-cm-long thin glass rod uniformly charged to 12.0 nc and a 10-cm-long thin plastic rod uniformly charged to - 12.0 nc are placed side by side, 4.20 cm apart. what are the electric field strengths e1 to e3 at distances 1.0 cm, 2.0 cm, and 3.0 cm from the glass rod along the line connecting the midpoints of the two rods?

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