The brakes on a bicycle apply 230 N of frictional force to the wheels as the bike travels 23.0 m. How much work have the brakes done on the bicycle ?

What do animals wth echolocation have in common other than echolocation

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Chlorophyll is found in plant leaves and absorbs light from the sun to enable plants to perform photosynthesis. magnesium is an important component of chlorophyll. the concentration of magnesium ions is higher in the root-hair cells of plants than in the soil. which mechanism of ion uptake would best enable a plant to produce a steady supply of chlorophyll? osmosis diffusion passive transport active transport