(5) IRON; Iron.....commonly seen... In the Solid state, becomes a liquid in a foundry and is a vapor in the Sun and in the Stars, where the temperature is many thousands of degrees; { any of a series of steps or stages, as in a process or course of action } The measurement of any quantity may be expressed... In terms of an arbitrary unit... The process of measurement consists in comparing the "Thing" to be measured, with the selected unit and expressing the result as a Number. In the Metric system the various units of a given kind are related by powers of 10. The primary units that we shall use are Length, Mass and Time. The Density of a substance is the Weight or Mass of any Sample of it, divided by the Volume of that Sample. Density is an example of a derived quality, in this case a combination of the Length and Mass units. (6) PRESSURE; Pressure is defined as the amount of force divided by the area on which it acts, All liquids exerts pressure because of their weight. The pressure is proportional to the depth, and at any point acts equally in all directions. The amount of the pressure is given by the depth multiplied by the density of the liquid. Another principle; the law that a body immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the body. In the ordinary barometer, a column of liquid is held up by Air pressure. the Height of the Liquid is a measure of the pressure. The resistance offered to the movement of a body through the ...
Friends Link : +99% Shop For Home Theater +99% Cheapest Watches !!1 Used Baby Trend Sit And Stand Strollers !9# Top 10 Lifetime Basketball Backboards
0 comments:
Post a Comment