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They were natives of Spain. Hope it helps :)
Answer:
Brittle materials:
Brittle materials are those material which does not shows any indication before failure.It means that they break suddenly without showing any indication.These materials have zero ductility.
Ex :
1.Glass is the very common example for brittle material and in our house we can easily see that when ever glass fall on the floor it breaks in very small pieces.
2. Metal objects are made from metal they behave as brittle like cast iron.
3. The another familiar example in our house for brittle material is dry clay.
Ductile materials:
Ductile materials which shows a indication before fracture.It have a range ,within this range they did not fail.The ability of material to draw into wires is known as ductility of that materials.
Ex :Those object are made from carbon steel,gold,silver etc.
Elastic deformation :
To regain the original shape after removal of load is known as elastic deformation.
Ex: The familiar example of elastic deformation is rubber band ,when we apply a force on the rubber band then it goes under the deformation but after removal the load come back on the original position.
Most parts of Russia : Are far from bodies of water.
Most of its region is continental.
This often cause major crisis in finding enough clean water to fulfill the people's needs.
Answer:
Brianna pushes against a door that is stuck in but No work is done
Explanation:
Force: this simply an action and it involves either a pull or a push.
Energy: it is ability to do work.
Work: work is done when force is applied over a distance.
Brianna pushes against a door that is stuck in; a force is exerted with a form of energy but no any form of movement. Work is done when the exerted force is translated to kinetic energy over a distance.
