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Density is defined as mass per unit volume (Fig. 1-25). Density: (kg/m) (1-4) The reciprocal of density is the specific volume v, which is defined as vol- ume per unit mass. That is, 1. (1-5) For a differential volume element of mass ôm and volume &V, density can be expressed as P The density of a substance, in general, depends on temperature and pres- sure. The density of most gases is proportional to pressure and inversely proportional to temperature. Liquids and solids, on the other hand, are essentially incompressible substances, and the variation of their density with pressure is usually negligible. At 20°C, for example, the density of water changes from 998 kg/m' at 1 atm to 1003 kg/m' at 100 atm, a change of just 0.5 percent. The density of liquids and solids depends more strongly on temperature than it does on pressure. At I atm, for example, the density of water changes from 998 kg/m' at 20°C to 975 kg/m' at 75°C, a change of 2.3 percent, which can still be neglected in many engineering analyses. Sm/dV.

Density is defined as mass per unit volume (Fig. 1-25). Density: (kg/m) (1-4) The reciprocal of density is the specific volume v, which is defined as vol- ume per unit mass. That is, 1. (1-5) For a differential volume element of mass ôm and volume &V, density can be expressed as P The density of a substance, in general, depends on temperature and pres- sure. The density of most gases is proportional to pressure and inversely proportional to temperature. Liquids and solids, on the other hand, are essentially incompressible substances, and the variation of their density with pressure is usually negligible. At 20°C, for example, the density of water changes from 998 kg/m' at 1 atm to 1003 kg/m' at 100 atm, a change of just 0.5 percent. The density of liquids and solids depends more strongly on temperature than it does on pressure. At I atm, for example, the density of water changes from 998 kg/m' at 20°C to 975 kg/m' at 75°C, a change of 2.3 percent, which can still be neglected in many engineering analyses. Sm/dV.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Density is defined as mass per unit volume (Fig. 1-25). Density: (kg/m) (1-4) The reciprocal of density is the specific volume v, which is defined as vol- ume per unit mass. That is, (1-5) For a differential volume element of mass ôm and volume &V, density can be expressed as P The density of a substance, in general, depends on temperature and pres- sure. The density of most gases is proportional to pressure and inversely proportional to temperature. Liquids and solids, on the other hand, are essentially incompressible substances, and the variation of their density with pressure is usually negligible. At 20°C, for example, the density of water changes from 998 kg/m' at I atm to 1003 kg/m' at 100 atm, a change of just 0.5 percent. The density of liquids and solids depends more strongly on temperature than it does on pressure. At I atm, for example, the density of water changes from 998 kg/m at 20°C to 975 kg/m at 75 C, a change of 2.3 percent, which can still be neglected in many engineering analyses. Sm/8V.
Transcribed Image Text:Density is defined as mass per unit volume (Fig. 1-25). Density: (kg/m) (1-4) The reciprocal of density is the specific volume v, which is defined as vol- ume per unit mass. That is, (1-5) For a differential volume element of mass ôm and volume &V, density can be expressed as P The density of a substance, in general, depends on temperature and pres- sure. The density of most gases is proportional to pressure and inversely proportional to temperature. Liquids and solids, on the other hand, are essentially incompressible substances, and the variation of their density with pressure is usually negligible. At 20°C, for example, the density of water changes from 998 kg/m' at I atm to 1003 kg/m' at 100 atm, a change of just 0.5 percent. The density of liquids and solids depends more strongly on temperature than it does on pressure. At I atm, for example, the density of water changes from 998 kg/m at 20°C to 975 kg/m at 75 C, a change of 2.3 percent, which can still be neglected in many engineering analyses. Sm/8V.
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