In a 68 s interval, 237 hailstones strike a glass window of area 1.104 m2
at an angle 64◦
to the
window surface. Each hailstone has a mass of
5 g and speed of 15 m/s.
If the collisions are elastic, find the average
force on the window.
Answer in units of N

Two solutions of the same uv-absorbing molecule were analyzed by uv-vis spectroscopy on the same instrument using 1 cm pathlength cells. use data from the table to calculate by what percentage the concentration of solution b is compared to that of solution a.sample absorbance at 315nm a 0.45 b 0.80