because of the gravity of the earth -Jade
Yes, all conductors have resistance to some degree. Resistance is a property of materials that impedes the flow of electric current. However, some materials have lower resistance (e.g., copper) while others have higher resistance (e.g., rubber).
Materials with more resistance have a higher resistivity, which is a measure of how strongly a material impedes the flow of electric current. Factors such as the material's atomic structure, temperature, and impurities can affect its resistivity. Materials like metals tend to have low resistivity due to their abundance of free electrons, while insulating materials have higher resistivity as they inhibit the movement of electrons.
Yes, some balls bounce more than others due to differences in their material composition, air pressure, and elasticity. Materials like rubber typically have higher bounce compared to materials like foam. Additionally, balls with more air pressure or higher elasticity will generally bounce higher.
Insulation is directly proportional to resistance. More resistance means more insulation. And if a material is denser (i.e. the particles are situated closer to each other), then the resistance is more. Hence, more density-->more resistance-->better insulation And since different materials have different density, hence they also have different insulations. hope it helps.. :)
Polyamide-polyimide fiber or Polybenzimidazole fiber
Yes, some materials hold onto electrons more tightly than others. This property is known as electron affinity, and materials with higher electron affinities tend to hold onto electrons more strongly when charged by rubbing. Materials like rubber or wool have higher electron affinities compared to materials like silk or glass.
THE FRENCH RESISTANCE The french communist resistance SOE And various others
Surface and material affect friction by changing the amount of contact between objects and the roughness of the surfaces. Smoother surfaces with less friction will have less resistance to motion, while rougher surfaces with higher friction will have more resistance. The type of material can also impact friction, as some materials have a higher coefficient of friction and will create more resistance when in contact.
because some are higher than others
The element that has the property of zero resistance is superconductors. Superconductors are materials that can conduct electricity without any resistance when they are cooled to very low temperatures.
SOunds like a homework question. But ok I'll answer. Ceramics is one major material used for resistance. BUT if you want to impress your teacher, you can say that ALL materials (even gold) offers some level or resistance, just very little)
Materials that tend to expand the most when heated include gases like air, and some metals like aluminum and copper. These materials have higher coefficients of thermal expansion compared to others, causing them to expand significantly when heated.