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Deffense [45]
2 years ago
7

Please help!!

Engineering
2 answers:
Lelechka [254]2 years ago
4 0
The Chinese people most definitely
Inessa05 [86]2 years ago
3 0

Answer:

I think that the answer is the Chinese

Explanation:

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Dampness or moisture introduces ____ into the weld, which causes cracking when some metals are welded.
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<em>This moisture (hydrogen) is a major cause of weld cracking and porosity. </em>

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The term is hydraulics.
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a coil consists of 200 turns of copper wire and has a cross-sectional area of 0.8mm square . The mean length per turn is 80 cm a
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3 years ago
Shows a closed tank holding air and oil to which is connected a U-tube mercury manometer and a pressure gage. Determine the read
damaskus [11]

Answer:

P_2-P_1=27209h

Explanation:

For pressure gage we can determine this by saying:

The closed tank with oil and air has a pressure of P₁ and the pressure of oil at a certain height in the U-tube on mercury is p₁gh₁. The pressure of mercury on the air in pressure gauge is p₂gh₂. The pressure of the gage is P₂.

P_1+p_1gh_1=p_2_gh_2+P_2

We want to work out P₁-P₂: Heights aren't given so we can solve it in terms of height: assuming h₁=h₂=h

P_1-P_2=p_1gh_1-p_2gh_2=(55)\cdot{32.2}h-845\cdot{32.2}h

P_2-P_1=27209h

3 0
3 years ago
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