Derive a Newtonian expression for the tangential tidal force exerted inward on the star, in terms of m, r, M, and d, again under the approximation r ≪ d. The combined effects of the radial tidal force in (a) and the tangential tidal force in (c) will lead to "spaghettification" of stars, or other objects that approach the black hole to within the disruption distance.

A26 cm object is 18 cm in front of a plane mirror. a ray of light strikes the object and is reflected off the mirror at a 42-degree angle. what is the angle of reflection? degrees what type of image is formed? what is the size of the image? cm

To a of 4 x hz is 1. 0. mm nm nm

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?