Answer:
option (c) 14.7 lbs
Explanation:
Data provided in the question:
Area of the column = 1 square inch
Now,
we know Air pressure at the ground surface level from the atmosphere
= 14.7 Psi
also, it can be represented as
14.7 Psi = 14.7 pounds per square inch
Therefore,
Weight of the air weigh within a column that is 1 square inch in area
= Air pressure × Area
= 14.7 pounds per square inch × 1 square inch
= 14.7 pounds i.e 14.7 lbs
Hence,
The answer is option (c) 14.7 lbs
Highwall mining is often used when excavating an open-pit mine becomes too expensive. There are many advantages over underground mining, including the fact that it is both more cost-effective and involves less lead time.
Answer:
A. Democracy spread throughout the region
Explanation:
After the collapse of the Soviet Union, Eastern Europe had slowly integrated a democratic government. This however does not mean it was perfect, most of them are corrupted but even Russia had declared itself a Republic after the end of the Communist Regime.
Answer:
about 1,200 miles
Explanation:
Red Sea, Arabic Al-Baḥr Al-Aḥmar, narrow strip of water extending southeastward from Suez, Egypt, for about 1,200 miles (1,930 km) to the Bab el-Mandeb Strait, which connects with the Gulf of Aden and thence with the Arabian Sea.
Most deforest trees for agricultural land.
I hope this helped!
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