Three metal spheres are placed next to each other as shown in the picture. a has two times the mass of b. c has one-third the mass of a. the distance between a and c is half that between a and b. given these conditions, which statement is true?

Kelly has come up with an explanation for why her sister is sometimes in a good mood and other times in a bad mood. she speculates that it is based on the hours of sleep her sister got the previous night. this explanation for her sister's behaviors is an example of a(n)