What type of bond occurs when two atoms share one pair of valance electrons? a. an ionic bond b. a covalent bond c. a hydrogen bond d. a shared bond

How do we measure or think of speed in the united states?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

In this thread, i would like you to comment on the nature of light and how operation of telescopes. light has a duality of a particle and a wave; which one affects your life? also how does light interact with optics inside telescopic systems? answer these questions in two paragraphs. then respond the another students response.