Why is the O2 concentration in arterial blood different from the O2 concentration in venous blood? (Hint: Arteries carry blood away from the lungs, and veins bring blood back to the lungs).

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Astate of matter all that has define volume and can flow is a(n)

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.