Why is the voltage increase after the step up transformer?

Pls help me!!!

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?

The substances that are necessary for producing of certain hormones and that store and transport vitamins

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring