Materials
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| What is Hooke's law | show 🗑
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| What is the formula for Hooke's law | show 🗑
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| What is the limit of proportionality | show 🗑
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| What is the elastic limit | show 🗑
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| show | ε=x/L
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| show | Strain has no units because it is a ratio
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| Why is the extension per unit force smaller for objects with a larger cross sectional area | show 🗑
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| show | σ=F/A
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| show | E=σ/ε
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| show | Extension per unit length
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| Define stress | show 🗑
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| show | The stress to strain ratio within the limit of proportionality
(define sub terms: stress and strain)
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| Define UTS | show 🗑
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| Define Elastic behaviour | show 🗑
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| show | Does not return to its original dimensions when the force is removed
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| show | The force to extension ratio within the limit of proportionality
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| Define malleable | show 🗑
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| Define ductile | show 🗑
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| show | Resistance to scratching or abrasion
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| Define brittle | show 🗑
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| Define tough | show 🗑
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| show | Withstands high stresses before failure
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| Define viscosity | show 🗑
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| What is Moh's scale of hardness | show 🗑
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| show | Scratch test
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| Define density | show 🗑
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| What is the equation for density | show 🗑
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| How do we calculate density for a regular solid | show 🗑
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| show | -Measure mass of empty measuring cylinder
-Pour liquid in
-Measure volume of liquid
-Measure the mass of the cylinder when full
-Subtract the mass of empty cylinder
-Calculate density
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| show | -Measure mass
-Immerse object on a thread into a eureka can
-Measure the volume of water displaced
-Calculate density
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| show | Elastic potential energy stored in object OR the work done in stretching object
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| show | Ee=0.5kx^2
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| How do we find the area under a curve | show 🗑
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| show | Some of the energy stored in the object is transferred to the internal energy of the molecules, due to friction
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| Explain the stretching process for rubber | show 🗑
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| show | -When unstretched molecules are tangled
-When stretched they straighten out
-When tension is removed it does not return to its original shape
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| Define polymer | show 🗑
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| show | A material moving by dislocation
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| Define netting | show 🗑
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| show | A large extension is produced for a very small increase in force
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| Define laminar flow | show 🗑
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| What is the criteria for fluid diagrams | show 🗑
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| Define turbulent flow | show 🗑
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| What is the equation for stokes law | show 🗑
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| show | v(term)=(2r^2 g(ρ(s)-ρ(l)))/9η
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| show | Temperature increases, viscosity decreases
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| For a gas what is the relationship between temperature and viscosity | show 🗑
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Created by:
Liam P
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