You are skateboarding on top of a small hill you have 100j of potential energy if you mass is 80kg how high is the hill your skating on

Endeleev saw trends in the physical and chemical properties of elements when he organized them by

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

How do you lengthen a pattern piece? (family and consumer science, sewing)