Thinking about the electromagnet and the horseshoe magnet in the item Electromagnetic field lines , how would the field lines change if the magnet was moved to the side of the electromagnet ? what about closer or farther away ? what if the horseshoe w as replaced by a bar magnet ?

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

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?

What is an example of static friction