Answer:
A)
B)
Explanation:
Given data:
P-1 = 100 lbf/in^2
degree f
effeciency = 80%
from steady flow enerfy equation
where h1 and h2 are inlet and exit enthalpy
for P1 = 100 lbf/in^2 and T1 = 500 degree F
for P1 = 40 lbf/in^2
exit enthalapy h_2
from above equation
[1 Btu/lbm = 25037 ft^2/s^2]
b) amount of entropy
at
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Answer: v= 195.2 m/s
Explanation:
The centripetal acceleration acts on the bottom of the test tube trying to take it closer to the axis of rotation, and it is defined by the following expression:
ac = v² / r
We know that ac = 5.4. 10⁴ . g = 5.4.10⁴.9.8 m/s²
Expressing r in m ⇒ r = 0.072 m.
So, the only unknown that remains is v, which is the linear speed of the bottom of the test tube, which we want to find out:
v = √ac. r = √5.4.10⁴.9.8 m/s². 0.072 m = 195.2 m/s
Answer:
The heat of the arc melts the surface of the base metal and the end of the electrode. The electric arc has a temperature that ranges from 3,000 to 20,000 °C
Explanation:
Welding fumes are complex mixtures of particles and ionized gases.
The guy above me is right fyi and its not 50 points