A) If we add a lump of ice to a tumbler
containing water ?

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

What is an electric motor? explain its operation. 2-3 sentence