Visible light waves are waves
A. mechanical
B. electromagnetic

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

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