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| What is the difference between extensive properties and intensive properties? |
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Definition
- Extensive-change with qty of substance
- Intensive-don't change with qty of substance
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Term
| What is the pressure of a fluid at rest with uniform density? |
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Definition
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Definition
| Measure of pressure compared to local atmospheric pressure |
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Term
| What is Pascal's principle? |
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Definition
| Pressure applied anywhere to an enclosed incompressible fluid will be distributed undiminished throughout the fluid |
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Term
| How does a hydraulic lift reduce input force? |
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Definition
- Piston 1-applies force (pressure) on fluid through longer distance
- Pressure transferred (Pascal's principle)
- Piston 2-greater force applied to greater area but shorter distance
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Term
| What is the buoyant force? |
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Definition
- Upward force acting on a submerged object
- F=p(fluid)Vg
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Term
| How do ideal fluids differ from real fluids? |
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Definition
- No viscosity
- Incompressible
- Lacks turbulence-all fluid flowing through any fixed point will have the same velocity
- Irrotational flow-any object moving with the ideal fluid will not rotate about its axis as it flows
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| How does velocity affect pressure? |
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Definition
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Term
| What is the relationship between pressure, volume flow rate, and resistance to flow? |
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Definition
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Definition
| Intensity of the intermolecular forces per unit length |
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Term
| What is stress and strain? |
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Definition
- Stress=F/A
- Strain-fractional change in an object's shape
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Definition
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Definition
| Maximum stress point-object will not regain its original shape even after stress is removed |
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Term
| What are the three types of moduli? |
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Definition
- Young's modulus-tensile stress
- Shear modulus-shear stress
- Bulk modulus-compression and expansion
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