A ray of laser light strikes a glass surface at an angle Θa = 25.0˚ to the normal and it is refracted to an angle Θb = 18.5˚ to the normal. What is the index of refraction nb for this type of glass? Na= 1.00

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

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.