The mass of some substance per unit volume is called density of this material, which is a reflection of the physical properties of the material in physics. Tungsten copper rod density is a kind of feature itself, which does not change with mass or volume.

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Weighing:

Weigh the mass of metal block by balance, record as m;

The amount of water injected into the cylinder, readout volume V1;

Get the block out and put the beaker on the balance and weigh out the beaker and the remaining water mass m3.

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