Some circular region with radius = 12 km centered at the equator. the air within this circular region is initially motionless with respect to the earth. the circular region is moved to the north pole along an isobaric surface in order to preserve its area. find the mean tangential velocity at this radius at the north pole.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

at right angles to each other

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: