1️⃣ MATÉRIAUX COMPOSITES
🔹 Définition
Un matériau composite est un matériau hétérogène, composé d’au moins deux matériaux différents (matrice + renfort), organisés géométriquement pour obtenir des propriétés supérieures à celles des matériaux seuls.
🔹 Intérêt
légèreté
résistance mécanique
liberté de forme
optimisation matière / performance
📦 Exemples packaging :
flacon parfum fibre + résine, boîte rigide luxe, emballage alimentaire multicouche.
2️⃣ CONSTITUTION
11.The article is a part of speech which is used before the noun and has the function of a noun determiner.Names of seasons:are used without articles if they show a certain time of the year. It was spring. I like spring.The definite article is used when these nouns are modified by a particularizing attribute or when the situation makes them definite. It happened in the spring of 1930. The spring was cold and rainy. The indefinite article is used when these nouns are modified by a descriptive
1. La dieta mediterránea
La dieta mediterránea es una de las dietas más saludables del mundo. Es típica de España y de otros países del sur de Europa. En esta dieta se comen muchas frutas y verduras frescas todos los días. También se consume pescado varias veces a la semana. El aceite de oliva es el producto principal y se usa para cocinar. La gente come pan, arroz y pasta. Las legumbres también son muy importantes. La carne se come menos que en otros países. No se come mucha comida rápida...
1. The noun is a word expressing substance in the widest sense of the word. This includes names of living beings, of lifeless things, of abstract notions (qualities, states, actions).The noun can be formed by means of suffixes and prefixes. Productive noun we form by means of such suffixes as: -er (to read - reader) -ist (to specialize - specialist) -ness (careless - carelessness)
-ism (national - nationalism) -ess (traitor - traitress). It is practically the only gender-forming suffix, expressing
(a) Radius of Gyration (k)
The radius of gyration of a body about a given axis is the radial distance from the axis of rotation to a point where the entire mass of the body could be concentrated without changing its moment of inertia.
Mathematically, it is defined by the relation:
Where:
* I is the moment of inertia.
* M is the total mass of the body.
* k is the radius of gyration (SI unit: meters).
(b) Can Poisson's Ratio be Negative?
Yes, the Poisson's ratio (\sigma) of a material can be negative.
A number system is a way of representing numbers using a set of symbols and a base (radix).
Examples:
Decimal (base 10)
Binary (base 2)
Octal (base 8)
Hexadecimal (base 16
Digital computers use binary because:
Electronic circuits have two states: ON (1) and OFF (0)
Binary is reliable and easy to implement
Less error in data processing
Integer part:
10012=1×23+0×22+0×21+1×20=91001₂
As physical and hormonal changes peak, adolescents face critical health choices regarding nutrition and substance use. These issues are deeply interconnected with the brain development we discussed earlier—the struggle between a seeking "reward system" and a still-developing "control center."
1. Nutrition and Growth -The "growth spurt" in adolescence creates the highest nutritional demand of any life stage except infancy. * Nutrient Demands: The body requires massive increases in calcium (for bone
ਪੰਜਾਬੀ ਵਿੱਚ ਸ਼ਬਦ ਰਚਨਾ (Word Formation) ਦੇ ਦੋ ਪ੍ਰਮੁੱਖ ਤਰੀਕੇ ਹਨ: ਅਗੇਤਰ ਅਤੇ ਪਿਛੇਤਰ। ਇਹਨਾਂ ਦੀ ਵਰਤੋਂ ਮੂਲ ਸ਼ਬਦਾਂ ਤੋਂ ਨਵੇਂ ਸ਼ਬਦ ਬਣਾਉਣ ਲਈ ਕੀਤੀ ਜਾਂਦੀ ਹੈ।
1. ਅਗੇਤਰ (Prefixes) -ਜਿਹੜੇ ਸ਼ਬਦ-ਅੰਸ਼ ਮੂਲ ਸ਼ਬਦ ਦੇ ਸ਼ੁਰੂ ਵਿੱਚ ਲੱਗ ਕੇ ਉਸ
1. What are the factors influencing network design? (VTU – 10 Marks Answer)
Introduction: Supply chain network design involves decisions related to facility location, capacity, and market allocation. These decisions are strategic and long-term in nature and directly influence cost, responsiveness, and overall supply chain performance.
Factors Influencing Network Design: Strategic Factors: A firm’s competitive strategy strongly impacts network design. Cost leadership firms prefer low-cost locations,