The ends of two fixed rods an and b are each made in the form of a single threaded screw of mean radius 6mm and pitch 2mm. rod a has a right handed thread and rod b has a left handed thread. the coefficient of static friction between the rods and the rods and the threaded sleeve is 0.12. determine the magnitude of the couple that must be applied to the sleeve in order to draw the rods closer

Why cooking gas has a typical smell

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical

1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light