Convert 2.60 meters per second to mph

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

How do dying stars contribute to the formation of planets