Some animals communicate by emitting low frequency sound waves. when the animal emits a low frequency sound wave what is the resulting pitch?

Need in all of themmm only answer if you know pls

A110-pound person pulls herself up 4.0 feet. this took her 2.5 seconds. how much power was developed? 0.13 hp 0.32 hp 2.0 hp 3.1 hp

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.