A piece of cloth is attracted to a negatively charged object. The cloth is also repelled by a positively charged object. What charge must the cloth have?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

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

Why does gravity have a lesser than grater effect on higher altitudes?