A force of 5 n applied to an area of 2 m2 is a pressure of 10 Pa (pascal). Increase the force to 10 n, and the pressure increases to 20 Pa. Decrease the area to 1 m2, and the pressure decreases to 5 Pa.
The pascal is the SI unit of pressure equal to one newton of force pressing on one meter squared.
The balloon exists in a separate pressure system from the bell jar itself.As the balloon is open to the surrounding air, the pressure within the balloon is 1 atm (1 atmospheric unit of pressure = 105 Pa).When pressure is decreased within the jar, the pressure within the jar decreases to a value lower than 1 atm. Therefore, to counter the low pressure created in the jar, the atmospheric air moves into the balloon and pushes the balloon into the jar to attempt to equalize the pressure in the balloon and in the jar. Therefore the balloon inflates.
Net force is created when force is applied to move an object.
I assume you mean 2 m^2. P = F / A = 5.0 / 2.0 = 2.5 Pa. Doublng the force means the double the pressure.
As far as I know this is not true- volume can be increased or decreased. What is conserved in a chemical reaction is mass. Matter is not created or destroyed.
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