As the bright sun shines upon the water, the water slowly disappears. the same sunlight gives energy to the surrounding plans to convert water and carbon dioxide into sugar and oxygen gas which change is a physical and which is a chemical

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

How many atoms of nitrogen are in the chemical formula ni(w on