Technician A says that when using an impact wrench to remove a bolt from the front of an engine's crankshaft, the crankshaft mus
1 answer:
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Answer: see attachment
Explanation:
Answer:
The maximum length of a surface flaw is 8.24 μm
8.24 μm
Explanation:
Given that:
The modulus of elasticity E = 69 GPa
The specific surface energy = 0.3 J/m²
The length of the surface flaw "a" = ??
From the theory of the brittle fracture;
Making a the subject of the formula; we have:
a = 8.24 × 10⁻⁶ m
a = 8.24 μm
Thus; the maximum length of a surface flaw is 8.24 μm
Answer:
The pressure upstream and downstream of a shock wave are related as
where,
= Specific Heat ratio of air
M = Mach number upstream
We know that
Applying values we get
Similarly the temperature downstream is obtained by the relation
Applying values we get
The Mach number downstream is obtained by the relation