build mind power

A contractor wishes to lift a load of bricks from the sidewalk to the top of a building by means of a winch. Since we know the expression for work, we can calculate work to be done by the force applied by the winch to lift the load. We are interested in the rate at which it is done,..

Electricity is obtained from flowing water. The flow of water is checked by building a dam. The water from the dam is allowed to flow through the tunnels at a high pressure. Turbines convert the potential energy of the water into electricity. About 23,800 MW of energy is generated by hyde..

Tidal Power - The tides are formed due to the gravitational force of attraction between the earth, sun and moon. During high tides sea water is trapped in a reservoir, and released later to drive turbines, which in turn produces electricity. The block diagram given below illustrates the t..

Cement is one of the most important modern building materials. It finds application in the construction of buildings, roads, dams and bridges. It is obtained by combining a lime-rich material with the one containing silica and alumina. Joseph Aspdin in 1824 found that when a str..

Question: There is one word missing from each line. Put a / where the word is missing and write the word in the blank provided: It is the adult world destroys _______ the intelligence sharp minds of _______ children and abilities. The ________ constant rejection and quieting child _..

Hydroelectric power stations can cause some major problems. Large dams must be built to hold the water before it flows to the turbine. This causes ecological imbalance. At times small pieces of earth get trapped at the bottom of still water in the reservoir. As these deposits build..

Write a Morning Assembly Speech on how Urbanisation could take place without harming environment. Good Morning! We exclaim with delight when we see beautifully planned cities. Yet we forget the number of trees that have been removed to raise these skyscrapers. The need of the hour is to have pla..

For a pure inductor in AC circuit, cos q = 90 o P = O. i.e., Average power over a complete cycle of AC through an ideal inductor is zero. i.e., whatever energy is needed in building up current in L is returned back during the decay of the current. The shaded portion of th..

Question: Shylesh Rathod is doing a science project on pollution. He has drawn the diagram below to explain acid rain. Now he needs to write a brief paragraph about it. Use the information in the diagram and complete the paragraph for him. Do not add any new information. Power..

>In a hydro power plant electricity is produced from water. Hydro power plants convert the potential energy of falling water into electricity. Wind Energy Moving air is called wind Wind possesses kinetic energy Wind energy can be used to sail boats, grind grains, pump water and ..