A spherical container with a diameter D is filled at at

A spherical container with a diameter D is filled at atmospheric pressure with a liquid of density ρо and elastic modulus Hedgehog.
Hydraulic tests for the strength of welds are performed with an excess pressure Δp by pumping an additional volume of liquid ΔV by the pump.
To find:
1) the mass of the additional amount of liquid and the density of the liquid after compression;
2) the operating time and the required power of the feed pump when it is supplied Qн.
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