Atank has a volume of 0.1 m3 and is filled with he gas at a pressure of 5 x 106 pa. a second tank has a volume of 0.15 m' and is filled with he gas at a pressure of 6 x 106 pa. a valve connecting the two tanks is opened. assumıng he to be a monatomic ideal gas and the walls of the tanks to be adiabatic and rigıd, find the final pressure of the system hint: note that the internal energy is constant.

Explanation:

Consider that, as the system is adiabatic, where U1 and U2 are the internal energies before the process and after that respectively.

Consider that: , and that the internal energy of the first state is the sum of the internal energy of each tank.

So,

Where A y B are the tanks. The enthalpy for an ideal gas is only function of the temperature, as the internal energy is too; so it is possible to assume:

So,

Isolating ,

So,

explanation:

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explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.