Auniform rod ab, of mass m and length /, is smoothly jointed the end b is attached by also of length 1, to a small ring, of mass m, which can slide on the wire, the coefficient of friction between the ring and the wire being . the rod is in equilibrium in the vertical plane through the wire. given that a is the inclination of the string to the horizontal, show that the tension in the string is of magnitude mg/(4 sin a). at the end a to a fixed straight horizontal wire ac means of a light inextensible string, show also that tan a 1/(5u)

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)