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Questions and Answers
What is the unit of stress in the SI system?
What is the unit of stress in the SI system?
- Kilograms per cubic metre
- Joules per mole
- Meters per second squared
- Newtons per square metre (correct)
What does the symbol $\sigma$ represent in the stress–strain equation?
What does the symbol $\sigma$ represent in the stress–strain equation?
- Force
- Strain
- Elongation
- Stress (correct)
What is the formula for strain, $\varepsilon$, in terms of change in length and original length?
What is the formula for strain, $\varepsilon$, in terms of change in length and original length?
- $\varepsilon = \frac{L-L_{0}}{L_{0}}$ (correct)
- $\varepsilon = \frac{L_{0}}{L}$
- $\varepsilon = \frac{L}{L_{0}}$
- $\varepsilon = \frac{F}{A_{0}}$
In stress–strain curve plotting, which axis is conventionally assigned to strain?
In stress–strain curve plotting, which axis is conventionally assigned to strain?
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What does the symbol $A_0$ represent in the stress equation?
What does the symbol $A_0$ represent in the stress equation?
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What is the estimated number of living animal species on Earth as of 2022?
What is the estimated number of living animal species on Earth as of 2022?
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Which scientific study is concerned with the study of animal behaviors?
Which scientific study is concerned with the study of animal behaviors?
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To which kingdom do animals belong?
To which kingdom do animals belong?
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What is the body plan of most living animal species?
What is the body plan of most living animal species?
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Which group includes phyla such as arthropods, molluscs, flatworms, annelids, and nematodes?
Which group includes phyla such as arthropods, molluscs, flatworms, annelids, and nematodes?
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