Explain why the negative charges embedded within the filtration membranes are able to repel proteins which are negative charge but not chloride ion.

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.