How to the magnetic field lines be drawn for the magnets shown below

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Consider the story you just read. all but one of the choices below indicate that something is living.