For making something that floats.
A definition doesn't exist for low density. The values depends on the application or material.
Low Density a Metal?NO!!!!
low density,corrosion resistant,highstrength, low friction
The density of low molecular weight polyisobutylene (PIB) typically ranges from 0.87 to 0.92 g/cm3. The exact value may vary based on factors such as molecular weight and purity of the material. It is a generally low-density material.
IF the density is low, then there will be an echo
Yup. All else being equal, a piece of a high-density material will be stronger than a piece of a low-density version of the same material.
its made of low density poly vinyl cloride
High energy density. Low dispersion.
Objects with low density include foam, cork, and helium gas. Their low density makes them lightweight and buoyant, allowing them to float easily on water. Additionally, low-density objects are often good insulators and have a high strength-to-weight ratio, making them useful in applications where weight is a concern.
A 1 inch cube made of high-density material like steel or lead would weigh approximately 0.3 pounds (4.8 ounces). However, if the material is low-density like balsa wood or foam, it would weigh significantly less.
If the low density water was put over another fluid of lower density it would sink but if it was put over a high density fluid like Mercury it would floats.
One material that is not good at conducting thermal energy is styrofoam. Styrofoam is a poor conductor because it has a low density and is composed mostly of pockets of air, which hinders the transfer of heat. This property makes styrofoam useful for insulation purposes.