Determine the rate of change h. a of the angular momentum hd of the 3-lb rod cde, assuming that at the instant considered the assembly has an angular velocity ω = (13.8 rad/s)i and an angular acceleration α = (97.8 rad/s2)i.

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

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