Answer:
The carrier lengthen by 7.79 × 10⁻² m when it is traveling in the warm Mediterranean Sea at a temperature of 20° C
Explanation:
The initial length of steel (
) = 371 m
The change in length = ΔL
The change in temperature (ΔT) = 20°C - 2.5°C = 17.5°C
The coefficient of linear expansion of steel (α) = 12 × 10⁻⁶ ⁰C⁻¹
ΔL = αL₀ΔT = 371 × 17.5 × 12 × 10⁻⁶ = 7.79 × 10⁻² m
The carrier lengthen by 7.79 × 10⁻² m when it is traveling in the warm Mediterranean Sea at a temperature of 20° C
Answer:
This theory was developed in 1929 by the American demographer Eric Lofstedt
Explanation:
- Demographic transition s models that show how the population of any country moves from traditional to modern society i.e shift from high birth rate to low birth rate with improvement ion stands of living.
<u>The transition has five stages/phases
</u>
First Stage: A stable or slow increase in population. i.e pre-industrial society
Second Stage: Very rapid increase in population. i.e Agricultural revolution
Third Stage: Increase slows down. i.e Urbanization stage.
Fourth Stage: Falling and then a stable population. i.e Disease control
Fifth Stage: Stable or slow increase.
- Demographers created this transitional model keeping in mind the lifestyle of the man at the time of industrial societies keeping in mind the factors like income, marriage, morality, age and sex ratio, and dependent and independent variable like the birth and death rates.
- Various nations have different demographic transitions and shift occur when societies advances and moves up the ladder of growth. LInking society fertility and economic development.
Answer:
Cuba. Cuba is the most populous Caribbean country with 11.2 million people.
Answer:
<u>Radon </u>in door source of air pollution.
Explanation:
- From all Pollutant and sources found in the interior of the homes like the pet dander and molds, pesticides and asbestos. Radon a chemical element found in homes having an atomic number of 86. It is a radioactive and odorless tasteless natural gas.
- Through the radon is non-reactive elements, it can be oxidized with compounds of fluoride. It has no stable isotopes characterized bt unstable mass. In the mining industry, it caused due to the exposure from the released air.
- Radium-226 is used to produce the radon which is found in uranium ores and phosphate rocks. An estimate of about 2.4 billion curies of radon is released every year into the soil. This pollutant can also be found in water bodies and even in construction sites.
For the first eleven years of its existence, the United States
implemented a "B. Confederation" style government, since during this
time most of the power was reserved by the individual states--not the
central government.
