question and anwers 1) what is meant by a physical quantity? . how the physical quantities are organized in SI 2) write the steps to follow to mesa sure a physical quantity. 3) what are the fundamental physical quantities? 4) write the relation between P,N and U.
Answers
Explanation:
1)A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.
2)You are interested in measuring something, its weight, size, and other characteristics. You may need a measuring device, such as a graduated cylinder or a measuring cup. A scale will enable you to determine the weight. A ruler may permit you to measure the height, width, and length. To measure a large irregular object easily, put it in a large graduated cylinder and cover with grains of rising, See how much the rock displaces the rice or water. THAT gives you its volume, a very useful part of its Use a thermometer to measure the temperature of liquids.
3) U refers to initial energy, P refers to pressure,V refers to volume.