You are a project manager for a manufacturing company. one of the machine parts on the assembly line is a thin, uniform rod that is 60.0 cm long and has mass 0.400 kg.

(a) what is the moment of inertia of this rod for an axis at its center, perpendicular to the rod?
(b) one of your engineers has proposed to reduce the moment of inertia by bending the rod at its center into a v-shape, with a 60.0∘ angle at its vertex. what would be the moment of inertia of this bent rod about an axis perpendicular to the plane of the v at its vertex?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?