you are given a white, crystalline powder that dissolves in water to produce a solution that conducts electricity. you are
told that the compound may either be cacl2 , no2, or so2. which is it? how do you know?

What is a good example of instantaneous speed

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.