Apoint at the end of a propeller has a centripetal acceleration of 532.6 m/s. if the velocity of the propeller at this point is 35, how long is the propeller blade

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