Which layer of the blood vessel is responsible for vasodilation and vasoconstriction?

An object accelarates from rest to a velocity of 2.4m/s over a distance of 16m what was its accelaration

You are a psychologist who has been asked to write a brief report about the possible causes of anxiety (nervousness, fears, in your report, write up a summary that explains and examines anxiety according to each of the psychological perspectives: psychoanalytic behavioral cognitive humanistic biological sociocultural

What is tge speed of sound in dry air at 0°c