Yes.
10N/mm2
no a solid will absorb the energy and will not pass it along to the air on the other side of the solid a solid with holes or very very thin solid is possible but will reduce the strength of the signal
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A relative strength of forces holding the particles together in a solid is the strong electrostatic forces between atoms or molecules known as chemical bonds. These chemical bonds can be covalent, ionic, or metallic, depending on the type of solid.
In a solid, the strength of attraction between particles is strong compared to liquids and gases. This is because the particles are closely packed and have limited freedom to move, resulting in firm bonding forces between them.
lattice energy
Generally, increased moisture levels will lower breakdown strength, especially if the dielectric readily absorbs water. Increasing temperature generally decreases breakdown strength of solid dielectrics. The dielectric strength of some materials may increase with temperature within limited temperature ranges. However, dielectric strength eventually begins to decrease at higher temperatures.
The property that determines how well a solid resists breaking is its hardness. Materials with higher hardness values are more resistant to deformation and breaking under applied forces.
Concrete that is in a solid state and has developed a certain strength. reaction continues with time and produced hard, strong and durable solid material.
Cement is a solid because its particles are closely packed together in a crystalline structure. This arrangement gives cement its rigidity and strength, allowing it to hold its shape and bear loads as a solid material.
Concrete blocks are tested for Compression and Tensile strength.
To determine the toughness of a solid, you would need to know its tensile strength, yield strength, and elongation at break. Toughness is a measure of a material's ability to absorb energy before fracturing, and it depends on a combination of these properties.