They just know everything. They are scientists. I just had to answer a question
Vertical stairs :P: W = (20 N) * (6.0 m) * cos (0 degrees) = <span>120 Joules
At 45 degrees: W = (20.0 N) * (6.0 m) * cos (45 degrees) =
(20N) * 6m) * (</span><span>0.707106781) = 84.853 Joules</span>
you haven't added a picture
Explanation:
But if you can describe the picture I can answer it
Answer:
The size, polarity, and charge of a substance will determine whether or not the substance can cross the cell membrane by diffusion. ... The lipid bilayer is much less permeable to the ion, because of its charge and larger size. As a general rule, charged molecules are much less permeable to the lipid bilayer.