Which speed(s) is/are below the sound barrier in air? a. 257 m/s b. 1,030 m/s c. 10 m/s

The solid that is formed and usually sinks to the bottom of a solution is the

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not

Which of the following best describes the shape of earth's orbit? a. ellipticalb. circularc. spirald. figure eight