1. The modulus of elasticity is defined as: A. The stress at the proportional limit B. The strain at the proportional limit C. The stress/strain ratio within elastic limit D. None... 1. The modulus of elasticity is defined as: A. The stress at the proportional limit B. The strain at the proportional limit C. The stress/strain ratio within elastic limit D. None of the above 2. What are the mechanical properties that describe a dental material with the following curve? A. Strong, tough, flexible B. Stiff, strong, brittle C. Rigid, weak, brittle D. Stiff, weak, brittle 3. The material which has the ability to absorb most of the energy forces without permanent deformation is called... A. Resilient B. Strong C. Brittle D. Hard 4. Major connectors in partial dentures should be: A. Rigid B. Flexible C. Brittle
Understand the Problem
The question pertains to the properties of materials, specifically in the context of dental materials. It asks for definitions and characteristics related to elasticity and mechanical properties, indicating a focus on material science principles relevant to dental applications.
Answer
1. C, 2. B, 3. A, 4. A
- The modulus of elasticity is defined as: The stress/strain ratio within elastic limit.
- Mechanical properties: Stiff, strong, brittle.
- Material ability to absorb energy: Resilient.
- Major connectors in partial dentures: Rigid.
Answer for screen readers
- The modulus of elasticity is defined as: The stress/strain ratio within elastic limit.
- Mechanical properties: Stiff, strong, brittle.
- Material ability to absorb energy: Resilient.
- Major connectors in partial dentures: Rigid.
More Information
Young's modulus is a fundamental property of materials, relating stress to strain within the elastic range. Resilience indicates the ability to absorb energy and return to its shape.
Tips
A common mistake is confusing toughness and stiffness. Toughness involves energy absorption, while stiffness is about deformation resistance.
Sources
- Young's Modulus - an overview | ScienceDirect Topics - sciencedirect.com
- Young's modulus - Wikipedia - en.wikipedia.org
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