1498 meters per second
Sound waves tend to travel faster at higher temperatures. I have found different values for the speed of sound in water in different sources. They range from 1450 to 1498 meters per second in distilled water and 1531 m/s in sea water at room temperatures (20 to 25 °C).
Stratification helps the civil engineer to:
a- properly understand the nature of the ground and know what is underlying this ground, whether solid rocks or soil
b- develop an understanding of the permeability of the composite soil
c- develop an understanding of the mechanical properties of the ground such as its strength
d- ensure that the site is properly structured and suitable for the targeted project<span />
Answer: There are many answers here is what I can comprehend
Explanation:
There are problems with <em>UNEVEN DEVELOPMENT</em> that directly affect people's quality of life and standard of living. These are known as <em>INEQUALITIES</em> - extreme differences between poverty and wealth, as well as in peoples' well being and access to things like jobs, housing and education.
Heat energy is needed to increase the temperature of an object. The amount of energy needed depends on the mass of the object, the type of material it is made from, and the temperature increase.
Heat energy is also absorbed when substances melt or boil, but the temperature does not alter during a change of state. The amount of energy needed to melt or boil something depends upon the mass of the object and the type of material it is made from
When a country has economic development, the birth rate usually falls. People are working more and wait later in life to have children. While some others now choose to not have any children at all. For a population to be stable, a woman needs to have 2 children, it has fallen over the years in developed countries. This can be problematic for future generations because the newer generations are the ones to support the retiring generations. Labor forces will shrink and this will then hurt the economy.
