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4 years ago

A material is said to be ductile if it

1 answer:

6 0

A material is said to be ductile if it can be stretched thin when tensile stress is administered. Such a material can be stretched into a wire.

This is different from malleability which describes a material that can bend or alter shape using compressive force e.g. hammering , rather than tensile stress.

Tensile stress is a type of force or stress that alters the length of a material in the same direction as the force being applied.

The opposite of ductile is brittle. Brittle materials can break when subjected too much tensile stress.

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Amazon rectangular bar of low carbon steel A-36 is exposed to an axial strees of 150 MPa. What is the original length of the bar

kolbaska11 [484]

Answer:

1.8m

Explanation:

Let the Elastics of the steel ASTM-36 $E = 200000 MPa$

The strain of the bar when subjected to 150 MPa is

$\epsilon = \frac{\sigma}{E} = \frac{150}{200000} = 0.00075$

Therefore, if the bar elongates by 1.35 mm, then the original length L would be:

$\epsilon = \frac{\Delta L}{L}$

$L = \frac{\Delta L}{\epsilon} = \frac{1.35}{0.00075} = 1800 mm$ or 1.8m

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3 years ago

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grandymaker [24]

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3 years ago

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alexdok [17]

Answer:

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Explanation:

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3 years ago

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5. Dry ice is an example of _________, which is the process of a solid turning directly into a gas. (1 point) precipitation melt

ki77a [65]

<span>5. Dry ice is an example of _________, which is the process of a solid turning directly into a gas. (1 point)

sublimation

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3 years ago

If 90 grams of gold has a volume of 5 cm3, calculate the density (include the units and show your work or you get no credit

ehidna [41]

Answer:

The density of gold is of 18 grams per cm3.

Explanation:

The mass density of a homogeneous material expresses how much mass of that material is present in a given volume. Since the density of an object is obtained by dividing its mass by its volume, to obtain the density of gold, its 90 grams of mass must be divided by its 5 cm3 volume, performing the following calculation:

90/5 = X

18 = X

Thus, the density of gold is 18 grams per cm3.

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3 years ago