3. Point charges 91 and 92 are separated by a distance of 60 cm along a horizontal axis. The magnitude of 91 (1 point) is 3 times the magnitude of 92. At which point a on the axis is the electric field zero?

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

How many atoms of nitrogen are in the chemical formula ni(w on

What is a subatomic particle with a negative charge and very little mass?