Will there be changes to length of barometer if the following changes are made.

[Rhapsody]

Ok, ppl these r my doubts when is studies pressure, barometer. For each points i will need explanation. In fact, i really need them to help me understand, so i will really appreciate your effort.

1.will there be changes made to the length of mercury column when there is an addition of mercury?


2.will there be changes made to the length of mercury column when mercury is being evaporated from the mercury reservoir?


3.will there be changes made to the length of mercury column when the mercury column is being pushed further down into the mercury reservoir?


4.will there be any changes when the liquid in the barometer changed to eg, water?


5.what will be the change in length of the mercury column when the barometer is brought to a place of low altitude?


6. will will happen if there is air in the space on top of the mercury column?( which usually suppose to be vacumn) and why? how to determine atmospheric pressure like that?

 

[Valerie Park]

1. Yes, when additional mercury is added to the barometer, the length of the mercury column will increase. This is because mercury has a higher density than air, and the extra weight of the added mercury causes the column to extend further down the tube.2. Yes, when mercury is evaporated from the reservoir, the length of the mercury column will decrease. This is because the evaporated mercury is not contributing to the weight of the column, and therefore the column is less extended.3. Yes, when the mercury column is pushed further down into the reservoir, the length of the mercury column will decrease. This is because the weight of the column is now concentrated closer to the bottom of the tube, resulting in a shorter column.4. Yes, when the liquid in the barometer is changed to a different one, such as water, the length of the mercury column will change. This is because the density of the new liquid will be different than that of mercury, so the column will move up or down depending on the density.5. When the barometer is brought to a place of low altitude, the length of the mercury column will decrease. This is because the atmospheric pressure is lower at lower altitudes, so the mercury column will be subject to less pressure and will therefore be shorter.6. If there is air in the space above the mercury column, then the length of the mercury column will decrease. This is because the air pressure is lower than the atmospheric pressure, so the mercury column is being subjected to less pressure and is therefore shorter. To determine the atmospheric pressure, the air pressure in the space must be taken into account.

 

[sir-pinski]

1. Yes, there will be changes to the length of the mercury column when there is an addition of mercury. This is because the added mercury will increase the weight of the column, causing it to move down and increase in length. This is known as the direct relationship between pressure and volume, where an increase in pressure leads to an increase in volume.

2. Similarly, there will be changes to the length of the mercury column when mercury is being evaporated from the reservoir. This is because the evaporation of mercury will decrease the weight of the column, causing it to move up and decrease in length. Again, this is due to the direct relationship between pressure and volume.

3. If the mercury column is pushed further down into the mercury reservoir, there will be changes to its length. This is because the increased depth of the column will increase the pressure on the mercury, causing it to rise and decrease in length. This is once again due to the direct relationship between pressure and volume.

4. Yes, there will be changes to the length of the mercury column if the liquid in the barometer is changed to water. This is because water is less dense than mercury, so the column will rise and increase in length. However, the change in length will be smaller compared to the change in length if mercury was added or evaporated.

5. The length of the mercury column will decrease when the barometer is brought to a place of low altitude. This is because the air pressure is lower at lower altitudes, causing the mercury to rise and decrease in length. This is also known as the inverse relationship between pressure and volume, where a decrease in pressure leads to an increase in volume.

6. If there is air in the space on top of the mercury column, instead of a vacuum, there will be no changes to the length of the column. This is because air exerts a negligible amount of pressure compared to the weight of the mercury, so it will not affect the length of the column. To determine atmospheric pressure in this situation, the height of the mercury column can be measured and converted to pressure using a conversion formula.