3. an 8-inch diameter steel shaft is force fit into a cast iron disk with a 20-inch outside diameter. the maximum tangential stress in the disk is 5000 psi. if esteel = 30x106 psi and ecast iron = 15x106 psi, with poisson’s ratio  for both materials equals to 0.3, (a) determine the contact pressure required between the shaft and the disk (a: p  3621 psi ). (b) determine the decrease in the radius of the shaft (a: ds = 0.00034 inch). (c) determine the required diametral interference (a: 2 = 004 in. (hint: a change in the shaft radius or diameter can be obtained through the displacement in the shaft)

the correct answer is c.stops after infancy and childhood.

myelin is the substance of the central nervous system (cns) that insulates nerve cell axons to increase the speed at which nerve impulse travels. myelination is a process of myelin formation. this process occurs postnatally, begins in the embryo during the midst of early development and finishes after birth.

explanation:

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false

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