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Materials 1 > Part 1 > Flashcards

Part 1 Flashcards

1
Q

What are superconductors

A

Superconductors can support current with zero resistance, and produce high magnetic fields

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2
Q

Strain

A

Applying force (stress) to an object causes it to deform

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3
Q

Tensile stress

A

Vertical force

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4
Q

Shear stress

A

Horizontal force

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5
Q

Poissons ratio

A

Relative amount of lengthening and shortening

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6
Q

Effect of poissons ratio
A) tensile
B) compressive

A

A) longer thinner specimen
B) shorter fatter specimen

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7
Q

Hookes law

A

For small strains, strain is nearly proportional to stress

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8
Q

Young’s modulus

A

Ratio of linear stress to linear strain

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9
Q

Shear modulus

A

Modulus of rigidity
Ratio of shear stress to shear strain

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10
Q

Bulk modulus

A

Resistance to uniform compression

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11
Q

What type of bonding is ionic bonding

A

Primary

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12
Q

What type of bonding is covalent bonding

A

Primary

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13
Q

What type of bonding is metallic

A

Primary

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14
Q

What type of bonding is van der waals

A

Secondary

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15
Q

What type of bonding is hydrogen bonding

A

Secondary

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16
Q

Type of bonding in diamond

A

Covalent

17
Q

Most common bonding in ceramics

A

Ionic bonding

18
Q

Is copper highly resistive or highly conductive

A

Highly conductive

19
Q

Fermi energy level

A

The amount of energy required to add another electron to the solid

20
Q

What is Si (obv silicon but like what does it do)

A

Semiconductor

21
Q

Effect of temperature in a semi conductor

A

Increased temperature means increased conductivity

Materials 1 (2 decks)

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