A log with a mass of 15 kg is on free fall from the top of a mountain. When it is at a height of 28 m from the ground level, it has a velocity of 70 m/s. a. What is its mechanical energy at this position?

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?