If your shelves are spaced A meters apart, calculate the work needed to lift a B-N book from one shelf to the shelf above it.

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr

The wavelength range of the visible spectrum is approximately 400 nm−700 nm. white light falls at normal incidence on a diffraction grating that has 350 slits/mm.

12. what is a phase change? construct a heating-cooling curve for a substance that freezes at –23.0 °c and has a boiling point of 67.0 °c. name all possible changes that can occur among the vapor, liquid, and solid phases of this substance, and name the four phase change enthalpies involved. indicate whether these changes are exothermic or endothermic. (6 points)