At what angle above the horizontal is the sun if sunlight reflected from the surface of a calm lake is completely polarized

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?

=force × distance a. work b. velocity c. pressure d. momentum

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?