Which of the following elements tend to be radioactiv Check all that apply.
A. Ne
B. Am
C. U
D. K

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?