How is a continuous spectra is formed?​

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

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