Sierra did 500 j of work to move her couch. if she exerts 250 n of force on the couch, how far did she move it?

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

What is a possible result of higher air temperature caused by global warming

Which accurately compares concave and convex lenses?