Answer:
500 m/s
Explanation:
Velocity (v) = wavelength (λ) x frequency (f)
V = 10 x 50
V = 500 m/s
Both seta and cheta or chaete means bristles. I think the term can be used interchangeably . Just check this link:- http://en.wikipedia.org/wiki/Polychaete It about polychaetes a class of annelid worms. These are extracts form the passage:- Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called *chaetae, which are made of chitin. Indeed, polychaetes are sometimes referred to as bristle worms. Bundles of bristles, called *setae, project from the parapodia. http://en.wikipedia.org/wiki/File:Polychaeta_anatomy_en.svg Thats a cross section the terms have been used interchangebly.
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The ocean and atmosphere are connected. They work together to move heat and fresh water across the globe.
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All living things because without chemical reaction life processes will not be complete.
