What is the height of mercury that is equal to atmospheric pressure?
The pressure is quoted as the level of the mercury’s height in the vertical column. Typically, atmospheric pressure is measured between 26.5 inches (670 mm) and 31.5 inches (800 mm) of Hg. One atmosphere (1 atm) is equivalent to 29.92 inches (760 mm) of mercury.
What does the height of the mercury barometer represent?
FIGURE 9.6 A mercury barometer. The height of mercury in the column is proportional to the pressure of the atmosphere. The height of the column of mercury measures the pressure of the atmosphere.
How do you measure the height of a mountain?
To calculate the elevation of a mountain, scientists would measure the distance between two points on the ground and then measure the angles between the top of the mountain and each point. “If you have two angles, you know the third, because the sum of the angles is 180 [degrees],” Molnar told Live Science.
How do you find the height of a mountain in physics?
Determination of Height of a Mountain by Simple Pendulum
- Determination of height of a mountain by simple pendulum.
- T1/T = √(g/g1)
- g = GM/R2 … … (1)
- g1 = GM/(R+h)2 … … (2)
- g/g1 = (R + h)2 / R2 = (H x h/R)2
How do you find pressure with height?
Pressure is the weight of the fluid mg divided by the area A supporting it (the area of the bottom of the container): P=mgA P = mg A . P=hρg P = h ρ g , where P is the pressure, h is the height of the liquid, ρ is the density of the liquid, and g is the acceleration due to gravity.
What is the height of mercury at sea level?
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. The 30-inch column is used as a reference standard.
How is the height of Mt Everest measured?
According to The New York Times article: “Today, Everest’s height is widely recognized as 29,029 feet. In the 19th century, the height of Everest was calculated by measuring the angles between the top of the mountain and points on the ground whose positions relative to the average height of the sea were already known.