8. How many families (groups) are on the periodic table ?
03
7
18
20

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k