7. At sea level, the height of the mercury column in a barometer is
a) 100 cm
b) 76 cm
c) 90 cm
d) 50 cm
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Answer:
d.50 cm
Explanation:
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Answer:
approximately 30 inches
Explanation:
The height of the mercury column serves as an indicator of atmospheric pressure. At sea level and at a temperature of 0° Celsius (C), the height of the mercury column is approximately 30 inches, or 76 centimeters. This represents a pressure of approximately 14.7 psia.
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