The traditional and ancient method of expanding video

The volume of the first empty B remains unchanged, and the pressure becomes 10 times of the original. According to the formula PV=nRT, it can be concluded that the number of gas molecules in the future will be 10 times of the original. If at normal atmospheric pressure, the volume is 40V0, which means 4V0, and it still needs 36V0, so it needs to be hit 36 times.

The second groove can control the maximum pressure, so the piston will not inhale from the outside when it is lifted. According to the formula PV=nRT, when the piston is below, the pressure becomes 10 times, the volume ratio is (H-h)/H, and the molecular weight of the gas remains unchanged, then H/h= 10:9 can be calculated.

Analysis:?

Theoretically, as long as the force is large enough to compress the gas volume in the cylinder to a very small size, the pressure that can be achieved in the cylinder can be very large, certainly not just 10P0. Then, if the maximum pressure in B is limited to 10P0, the maximum pressure that can be reached when the gas in A is compressed can only be controlled to 10P0.

Suppose that the gas in A is repeatedly compressed and pushed into B, the air pressure in B is 10P0, and the air pressure in A is also 10p0, and the piston just pushes the snap ring. At this time, because the air pressures in A and B are the same, A and B can be regarded as disconnected. Analyzing the gas in A alone is equivalent to changing the original gas volume in A into V, and the air pressure from P0 to 10P0. Because the temperature is unchanged, there is: P0*V0= 10P0*X, so X=V0/ 10, so the upper volume of the pump is v0-v0.