A thermocouple place in the mouth of a pitot tube can be used to measure the stagnation temperature of the flow. Such an arrangement placed in an air flow gives the stagnation pressure as 180 kPa, the static pressure as 55 kPa and stagnation temperature as 95

velocity of stream = = 461m/s

Explanation:

see stagnation temperature = 95 C = 95 + 273 = 368 K

now stagnation pressure = P1 = 180 pa

and P2 55 Kpa

now for air specific heta ratio = y = 1.4

for supersonic flow : T2/T1 = (P2/P1)

so, T2/368 = (55/180)

so T2 = 262.26 K = static Temperature

now, if we apply energy balance equation b/w static and stagnation point :

we get :

Cp.T1 + v1^2/2 = Cp.T2 + V2^2/2

here Cp = 1.005 KJ/Kg.K

and V2 = 0 as at static point velocity = 0

so, 1.005 x 368 + V1^2/2 x 1000 = 1.005 x 262.6

so,velocity of stream = V1 = 461m/s

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.

answer:

true

explanation: