.A race car maintains a constant speed of 195 kilometers per hour as it completes one lap around a circular track. Which statement about this car’s motion is true?

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

What type of electromagnetic wave is used in security pens? a. x-rays c. microwaves b. visible light d. ultraviolet radiation select the best answer from the choices provided

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