Sarah wondered if the nose of a paper airplane was weighted with paperclips, if it would fly further down the hall

When light strikes a plane mirror, images form in locations where light does not actually reach. it only appears to the observer as though the light were coming from this position. what type of image is formed?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2