1.Particles are spaced the farthest apart in _____ and are the closest in ______. Select the answer that best completes the sent
2 answers:
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Answer:
Explanation:
As it is given that flow rate in the pipe is 20 cm^3/s
so we have
at the upper end the area is given as
Also at the other end
now the speed at two ends is given as
now by Bernoulli's theorem we have
now we have
Now we have
Answer:
minimum length of a surface crack is 18.3 mm
Explanation:
Given data
plane strain fracture toughness K = 82.4 MPa m1/2
stress σ = 345 MPa
Y = 1
to find out
the minimum length of a surface crack
solution
we will calculate length by this formula
length = 1/π ( K / σ Y)²
put all value
length = 1/π ( K / σ Y)²
length = 1/π ( 82.4 / 345× 1)²
length = 18.3 mm
minimum length of a surface crack is 18.3 mm