law of demand and supply

We have seen that heat is just a form of energy. A system can be given energy either by supplying heat to it (by placing it in contact with a hotter object) or by doing mechanical work on it. Consider an ideal gas in a cylindrical container, fitted with a piston as shown in the figu..

. Thus, the gas gains energy as heat gets supplied to it and it loses energy as work is done by it. Suppose, in a process, an amount D Q of heat is given to the gas and an amount D W of work is done by it, the total energy of the gas must increase by ( D Q - D W). As a result, the entire ..

. Thermal equilibrium now demands that E = a I ....................... (2) Where E is the radiant energy per unit time per unit area emitted by the (non-black) body. It follows from Eq.(1) that ....................... (3) But in terms of emissivity e already defined ........................

When a potential difference is applied across the ends of a conductor, the free electrons are accelerated and acquire kinetic energy. As the electrons move through, they collide with the positive ions and atoms of the conductor and transfer their kinetic energy to them. Between two collisions, the ..

It is also called exploitative forestry. The main aim of this type of forestry is to supply goods and services to meet the local demand for firewood, fodder, food, fertilizers, fibre, timber, medicines etc. It is classified into two typ..

In healthy individuals, the ECG remains reasonably constant, even though the heart rate changes with the demands of the body. The electrical activity of the heart shows changes under the following situations. a) Change in ionic environment of the heart b) A defect in the conduction system..

Humans depend on the forests largely to meet rapidly growing demands for timber, fibre, fuel, fresh water and food. All use forest produce in one form or other, e.g., when used as timber, paper, herbs and spices. Modern approaches in forest conservation have found that enforcement of fo..

Market Transactions Costs and Benefits of Competition Function of Money Economic Institutions Changes in Supply and Demand Forces that can change Price Sources of Tax Revenue Economic Roles for Governments Public Goods Costs and Benefits of Taxation Impact of Media on the..

Market Transactions Costs and Benefits of Competition Function of Money Economic Institutions Changes in Supply and Demand Forces that can change Price Sources of Tax Revenue Economic Roles for Governments Public Goods Costs and Benefits of Taxation Impact of Media on the..

Market Transactions Costs and Benefits of Competition Function of Money Economic Institutions Changes in Supply and Demand Forces that can change Price Sources of Tax Revenue Economic Roles for Governments Public Goods Costs and Benefits of Taxation Impact of Media on the..