interference occurs when two waves are out of phase

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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?