2 years ago

Which of the following machine parts always require

Engineering

1 answer:

Anna007 [38]2 years ago

8 0

Answer:fan blades, rotating , abrasive wheel machinery

Explanation:

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Which of the two materials (brittle vs. ductile) usually obtains the highest ultimate strength and why?

sveta [45]

Answer:

Explanation:

Ductile materials typically have a higher ultimate strength because they stretch absorbing more energy before breaking. While fragile materials snap in half before larger deformations due to larger loads occur.

It should be noted that when ductile materials stretch their section becomes smaller, and in that reduced section the stresses concentrate.

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3 years ago

A 3-m wide rectangular channel has a flow velocity of 1.8 m/s when the depth of flow is 1.2 m. what will be the flow velocity wh

valina [46]

Answer:

The flow velocity reduces to 0.72 m/s

Explanation:

According to the equation of continuity discharge in the channel should remain same

Thus we have

$A_{1}V_{1}=A_{2}V_{2}$

For a rectangular channel we have $Area=Depth\times Width$

Applying values in the continuity equation and since the width of the channel remains constant 3.0 m we have

$3\times 1.8\times 1.2=3\times 3\times V_{2}\\\\\therefore V_{2}=\frac{6.48}{9}=0.72m/s$

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3 years ago

Lately, you have noticed some repetitive stress in your wrist. Which sign is most likely the cause of that stress and pain?

Cerrena [4.2K]

1, you might have been carrying things that are way too heavy for you.
2, you might have weak tendons.

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3 years ago

Why dose bob not let humans touch him one and only Ivan

gogolik [260]

Sorry man i don’t know sorry

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2 years ago

‏What is the potential energy in joules of a 12 kg ( mass ) at 25 m above a datum plane ?

Virty [35]

Answer:

E = 2940 J

Explanation:

It is given that,

Mass, m = 12 kg

Position at which the object is placed, h = 25 m

We need to find the potential energy of the mass. It is given by the formula as follows :

E = mgh

g is acceleration due to gravity

$E=12\times 9.8\times 25\\\\E=2940\ J$

So, the potential energy of the mass is 2940 J.

3 0

2 years ago