In order for a sound wave to travel, it must have

Do you agree with scientist’s prediction about the warming of alaska and other polar regions?

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?

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?