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The value of atmospheric pressure at Johannesburg?

The average atmospheric pressure in Johannesburg is around 860 hPa (hectopascals). This can vary depending on weather conditions and altitude.


What is the normal atmospheric pressure in MB?

Normal atmospheric pressure is around 1013.25 millibars (MB) at sea level. However, this value can vary slightly depending on weather conditions and altitude.


What is the atmospheric pressure if the temperature is at 0c the velocity of sound is 331.0ms density of air is 1.295kg and what formula is used?

Sorry, the atmospheric pressure has really nothing to do with the speed of sound at 0c, but he temperature is very important Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure". The air pressure and the air density are proportional to each other at the same temperature.


What is the density of halothane vapor at 55c and 1.00 ATM of pressure?

The density of halothane vapor at 55°C and 1.00 ATM can be calculated using the ideal gas law, which states that (PV = nRT). At this temperature and pressure, halothane has a density of approximately 3.5 g/L. This value may vary slightly depending on the purity of the halothane and the specific conditions, but it provides a general estimate of its vapor density under these conditions.


What is the value of density of cold air?

This density (d) totally depends on the temperature (HOW cold is it) and pressure. Then d = M.p/R.T (in g/m3) in which M = (mean) molar mass of air = 0.8*28 +0.2*32= 28.8 g/mol p = pressure in Pa T = temperature in K R = gasconstant= 8.3145 J/mol.K

Related Questions

Under what condition is pressure altitude and density altitude the same value?

Pressure altitude and density altitude are the same value when the atmospheric conditions are standard (i.e., International Standard Atmosphere conditions). This typically occurs at sea level with a standard barometric pressure of 29.92 inHg and a standard temperature of 15 degrees Celsius.


What is the value of air density in hill station when compared with other places?

it quite less than that in places of low altitude.


The value of atmospheric pressure at Johannesburg?

The average atmospheric pressure in Johannesburg is around 860 hPa (hectopascals). This can vary depending on weather conditions and altitude.


When Altimeter setting is the value to which the barometric pressure scale of the altimeter is set so the altimeter indicates?

true altitude at field elevation.


Why does density and pressure change when you enter the earth?

Density does not change because density is measured by Mass/Volume. So whether you're on earth, on the moon or floating in space, your density remains the same. Pressure, on the other hand, changes because it is defined as force per unit area (Force/Area). Your weight is the force here. As you approach the earth, the value of g increases, and so does the value of force.


What is the normal atmospheric pressure in MB?

Normal atmospheric pressure is around 1013.25 millibars (MB) at sea level. However, this value can vary slightly depending on weather conditions and altitude.


What is the density of air at 273 kelvin?

The density of air at 273 Kelvin (0 degrees Celsius) is approximately 1.293 kg/m^3. This value is based on standard conditions and may vary slightly depending on factors such as altitude and humidity.


How would the altitude and the atmospheric pressure of Johannesburg affect the boiling point of water?

The higher altitude in Johannesburg will result in lower atmospheric pressure. Lower pressure causes water to boil at a lower temperature than at sea level. This means water will boil at a lower temperature in Johannesburg compared to sea level locations.


What is the density of the water at 40 Bar pressure?

The density of water at 40 Bar pressure is approximately 985 kg/m^3. This value can vary slightly depending on the temperature at which the measurement is taken, but 985 kg/m^3 is a commonly used approximation.


How do you use the Mitsubishi Pajero altimeter gauge?

An altimeter does not actually measure altitude directly, but rather just atmospheric pressure. So an altimeter is actually a barometer created for a specific purpose. The altimeter uses the changes in atmospheric pressure to determine the changes in altitude. Why does pressure change with altitude? Simply put, the pressure at any given point in the atmosphere around the earth is a result of the weight of the atmosphere above it (pulled down by gravity). For this reason, the higher in the atmosphere you are, the less atmosphere you have above, and the less pressure exerted on you. Measuring altitude with barometric pressure is not free from difficulties, however. Atmospheric pressure can also change with changes in weather patterns. On an uneventful weather day it is not too unusual for an air pressure change of 1 mbar, caused by temperature changes alone. This 1 mbar change in pressure could result in a skewed altitude reading of up to 26 feet (8 meters). But on an afternoon full of weather changes, like an approaching cold front, air pressure could change by as much as 5 mbar, or more. This could result in a skewed altitude reading of up to 130 feet (40 meters), or more. Typically, when bad weather is approaching, the pressure will be falling. And the altimeter thinks this decrease in pressure is due to an increase in altitude, so it will read higher than you really are. And the opposite is the case when the weather conditions are improving - the altimeter will read lower than you really are. In order to compensate for weather changes, an altimeter must be calibrated using a known altitude or a known pressure value. A known altitude can typically be taken from a specific landmark on a topographic map. But if you do not have a known altitude to use, you will need to use a known pressure value. This is typically done with a barometric pressure value. "Barometric Pressure" is the current air pressure at sea level, for a specific location. Barometric pressure is measured several times per day, and can usually be obtained from flight service stations or aviation weather reports. With all of the changes that affect an altimeter, your elevation can easily be skewed by a few hundred feet in as little as one day's time. You will want to calibrate your unit at least once per day, but for improved accuracy (especially in changing weather conditions), you may want to calibrate it every couple of hours at a known elevation.


What must be the density of the liquid if the data are good?

The density of a liquid should be consistent and reproducible across multiple measurements to ensure that the data are good. Typically, the density should be close to the accepted value for that particular liquid at a given temperature and pressure. Deviations from this value could indicate errors in the measurement or experimental setup.


Does specific gravity has units?

- The specific weight is the weight of a known volume of material at a given temperature and pressure; the unit of measure is kN/m3. - But if you think to relative density: Relative density (specific gravity) is the ratio between the density of the material to be tested and the density of water, at a given temperature and pressure; consequently no unit of measure for this ratio.