2 years ago

I NEED HELP HERE SUM POINTS ( i will report if you put a link and or no answer

Engineering

1 answer:

Y_Kistochka [10]2 years ago

8 0

Answer:

ok I will help you ha Ha ha ha ha ha ha ha ha ha ha ha

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True or false tensile forces are smaller in arch bridges

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True

Explanation:

The tensile forces are small in most arches and usually negligible.

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The properties of the air in the inlet section with A1 = 0.25ab m2 in a converging-diverging channel are given as U1 = 25a,b m/s

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4 years ago

Water from the Earth's surface turns into a gas, or water vapor, when it is warmed and

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Evaporation.

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How will you maintain the orderliness of your storage area 2pts?

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Label and group products. One would think that a general cleanup would be the first step, but no, it's not. ...Clean up the area. ...Put up demarcation lines. ...Stack properly. ...Keep the aisles, paths and ramps clear. ...Have all the safety signs in place.

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2 years ago

A 30 mm thick AISI 1020 steel plate is sandwiched between two 10 mm thick 2024-T3 aluminum plates and compressed with a bolt and

denis-greek [22]

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275 MPa

Explanation:

Regardless of what it is holding, the stiffness of a bolt depends on its own material properties and geometry.

The stiffness is:

$k = E * \frac{A}{l}$

I assume this one is made of steel, because regular bolts are steel.

The Young's modulus for steel is E = 210 GPa

The longitude is given. (But note that in a real application you have to consider the length up to the nut.)

The section is (using the nominal diameter of 10 mm)

$A = \frac{\pi * d^2}{4} = \frac{\pi * 0.01^2}{4} = 7.85e-5 m^2$

Then:

$k = 2.1e11 * \frac{7.85e-5}{0.06} = 275e6 Pa = 275 MPa$

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3 years ago