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Newton's First and Second Laws of Motion:Question 2
A 10 m ladder with a mass of 15 kg leans against the wall. If
the ladder is in static equilibrium, what must be the normal
force from the ground, assuming the wall is frictionless?
Select one:
o
73.5 N
o
30 N
147N
оо
15 N

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

this would be called the responsiveness

answer; increases;