Question

Почему спасатильне пояса делают из пробки

Answer 1

Плотность пробки значительно меньше плотности воды,поэтому пробковые спасательные пояса не тонут и могут выдержать выдержать вес человека на поверхности воды.

Answer 2

Потому что пробка не тонет в воде

Answer 3

Why are life preservers made of cork?

Life preservers, also known as life jackets or life vests, are designed to help keep a person afloat in water and prevent drowning. They are typically made of buoyant materials that provide enough flotation to support the weight of a person. While there are various materials that can be used to make life preservers, cork has historically been a popular choice.

Cork is a lightweight and buoyant material that is derived from the bark of the cork oak tree. It has natural air pockets that make it highly buoyant and resistant to water absorption. These properties make cork an ideal material for life preservers because it helps to keep the wearer afloat in water.

In addition to its buoyancy, cork also has other desirable qualities that make it suitable for life preservers. It is durable, flexible, and resistant to decay, which ensures that the life preserver remains effective over time. Cork is also relatively inexpensive and readily available, making it a cost-effective choice for manufacturing life preservers.

While cork has been widely used in the past, modern life preservers may also incorporate other materials such as foam or inflatable chambers to enhance buoyancy and improve comfort. These advancements in materials and design have allowed for the development of more efficient and effective life preservers.

In conclusion, life preservers are made of cork because it is a lightweight, buoyant, durable, and readily available material that helps to keep the wearer afloat in water.