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notka56 [123]
3 years ago
14

Two previously undeformed rod-shaped specimens of copper are to be plastically deformed by reducing their cross-sectional areas.

One has a circular cross section, and the other has a rectangular cross section. During deformation, the circular cross section is to remain circular, and the rectangular cross section is to remain rectangular. Their original and deformed dimensions are as follows:
Circular (diameter, mm) Rectangular(mm)
Original dimensions 18.0 20 x 50
Deformed dimension 15.9137 x55.1

Required:
Which of these specimens will be the hardest after plastic deformation, and why?
Engineering
1 answer:
mezya [45]3 years ago
4 0
I am not sure I am stuck on this and I have been for 45 min someone please help me and this girl or boy!!
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Answer:

116.3 electrons

Explanation:

Data provided in the question:

Time, t = 2.55 ps = 2.55 × 10⁻¹² s

Current, i = 7.3 μA = 7.3 × 10⁻⁶ A

Now,

we know,

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thus,

Q = (7.3 × 10⁻⁶) × (2.55 × 10⁻¹²)

or

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Also,

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Therefore,

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3 years ago
Urgent please help!<br> What are non-ferrous metal and ferrous metal?
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Explanation:

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Use a dotted line and shade the part right hand side of the line.

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Answer:

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