Pie is the exact ratio of the circumference of a circle to its diameter. In other words, the circumference is ~3.14 times longer than the diameter. This is true for a circle of any size, so it can be applied to astronomical objects as well as .....

10. We have given  f (x) = x / ( x + 2) Domain = A = { 1 , 2 , 3 } Range = ? To find Range, Put x = 1 in f (x) = x / ( x + 2)      f (1) = 1 / ( 1 + 2) = 1/3 Put x = 2 f (x) = x / ( x + 2)    .....

Here a solid is made by a hemisphere and cylinder having equal radius. The volume of the solid is 2707cm3.If the height of the cylinder is 80cm, We have to calculate the total surface area of the solod. For this we need radius. Let  r be .....

Here I have draw a figure,  From the figure find the area of tr.ABC  by using formula  √[ s(s-a) (s - b) (s - c)] Then area of  //gm ABCD = 2 x tr. ABC.  Find it. Again area of //gm = base x height = 25cm x h Use .....

Method

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It also depends on venous blood capillaries surrounding the alveoli through the process called diffusion. During inspiration, the partialpressure of oxygen (PO2)in the lungs is higher than that in the blood capillarties. But PCO2 in blood .....

Can you check your question once?  I think there should be velocity in second .....

To explain it we need to do some calculation. For this, let m be the mas of object which is moving with velocity v. Its initial kinetic energy = K.E.=1/2  mv2 When its mass is deccrease by  1/2 times new mass is M = m / 2. and its new .....

Let us take some  Examples ; plastics, Styrofoam, paper, rubber, glass , dry air etc. Do they transfer current?   No!   So, substances which can not conduct electricity are  called .....

Do you use electricity at your home? I am sure you do. Which type of wire is using there? It is made from special metals? Examples of conductors include metals, aqueous solutions of salts (i.e., ionic compounds dissolved in water), .....

 I hope you have TV, radio, Mobile ,computer, iron . From where you get power to use them? There are so many uses of electricity in mordern time.  Without it we cant imagine our dailly life. Can you add more .....

How do you turn on  TV or light in your room? All you do here is turn on the switch. So here you make closed circuit here by switching it on.! An electric circuit through which current can flow in  a path is .....

How you off you TV or light in your room? When you off swetchs it is off. So here you make open circuit here by switching! An electric circuit through which current can not  flow in  path is open .....

A simple cell is a device that converts chemical energy into electrical energy. A simple electric cell consists of two electrodes (two different metals) and an electrolyte solution (acid or alkali solution or salt .....

Simple cell and cell is samething in electricity. A  cell is a device that converts chemical energy into electrical energy. A  cell consists of two electrodes (two different metals) and an electrolyte .....

Have you ever wondered how your mobile device and other electronic devices are charged? Besides keeping us digitally connected, electricity also saves lives in hospitals, powers industry and keeps the economy going. Whether it's a 19th .....

Okay tell me about today's weather in your place. Is it rainy or sunny day? If it is rainy, then  that is the weather of a single day. But that doesnot mean everyday will be rainng in your place. Climate is taken with reference to long .....

Factors that effect Weather

There are many factor that influence weather, many of which we cannot see.

The Water Cycle As the sun warms the surface of the Earth, water rises in the form of water .....

During storms, there is heavy wind. The wind may carry debris(particles). If we go outdoors, we might be hit by these particles like pieces of metals, stones, tree branches etc. Our houses can withstand strong winds. So, we should stay inside .....

Four major types of weather are: Hot: Hot is the description of  high temperature given out by the Sun.  Windy: Wind is movement of air and other gases in the atmosphere Dry: Dry is the description of low humidity .....

A meteorologist is an individual with specialized education who uses scientific principles to explain, understand, observe or forecast the earth's atmospheric phenomena and/or how the atmosphere affects the earth and life on the .....

Meteorology and Climatology are two terms that seem to have the same meaning but strictly speaking there is difference between the two terms. Climatology deals with the scientific study of climate. Meteorology is the study of the processes and .....

Let us discuss some exampes; Tropical climates are hot and can have a lot of precipitation. Regions that include rainforests or have monsoon seasons are examples of tropical climates. Polar climates are the .....

Weather can make a huge impact on people's lives. Knowing the weather forecast is a must when planning a party outdoors, putting together a trip, or just driving to work every morning. The weather also dictates what you are .....

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The home of fish is water. In nature, fish are found in lake, ponds, seas and oceans. They are the natural home of fish. Such a place or home is called .....

You may have learnt about natural resources. Natural resources are anything that we can use which comes from the natural environment. Such as air, water, soil, sunlight, plants, animals etc. We obtain food grains like rice, maize, green .....

Sunlight, geothermal energy, water etc .are renewable resouces. Can you guess why? Because they are constantly available for reuse. A renewable resource is one that cannot be exhausted. It is constantly available for reuse or can be .....

Okay you may have heard about the shortage of petrol, gas etc. Do you know why? Because these resources are available in limited amount and cannot be replaced once used. Thus, a non renewable resources are the types of natural reources which are .....

Most natural resources are limited. This means they will eventually run out. A perpetual resource has a never-ending supply. That means there perpetual resources are those resources which supply is even run out or .....

Look at the above figure. It describes the internal structure of earth which consists of core, mantle and crust. The core  The inner part of the earth is the core. This part of the earth is about 1,800 miles (2,900 km) below the .....

Life is possible on Earth because of its relative position with respect to the sun that it has an ambient environment and the under-mentioned things become possible: 1.Presemce of oxygen gas. 2.The temperature of the Earth is also .....

An equatorial bulge is a difference between the equatorial and polar diameters of a planet, due to the force exerted by its rotation. A rotating body tends to form an oblate spheroid rather than a sphere. And it is .....

It is simply the distance of the earth between north to south passing through the .....

You must have seen a flower of rose campion. Have you notice its life time? It lives for many years. So, it is known as perennial. Perennial plants are those plants which are expected to live more than two years.

Perennials may go to seed .....

Because it takes two years to complete its biological life cycle. Thus, biennial plants are those plants whose life cycle completes in two years. Examples of biennial plants are  parsley, fennel,lunaria, silverbeet, carrot .....

You must have seen radish at your home. Have you ever notice  how long it live? It completes its life cycle for one year. Thus it is an annual plants. Annual plants means those plants whose life cycle is completes after one year. Example .....

They all are terrestrial plants. Because they grow on land. Thus, terrestrial plants are those plants which grow on .....

 Do you know what hydrophytes are? Hydrophytes are the plants that grown in water of in very wet places. These hydrophytes may be floating or amphibious, totally or partially submerged.  The characteristic feature of these .....

You may have seen different birds and insects flying in the air. Like sparrow, crow, pigeon, butterfly, housefly etc. These animals can fly and spend most of their time flying in the air.   So these animals are called as aerial or flying .....

Creatures who spend the majority of their lives in trees. They eat, sleep and play in the tree canopy. There are thousands of species that live in trees, including monkeys, koalas, possums, sloths, various rodents, parrots, chameleons, geckos, .....

Look at the following picture. You can see rabbits living in a tunnel. This tunnel is called burrow. Those animals which are adapted for burrowing mode of life are called fossorial animals. They live underground by digging tunnels or .....

Hence, those animals which are adapted for running purposes are called as cursorial animals. Like: Dogs, cats, horses, fox, beer etc. The picture given below shows the cursorial locomotion of a .....

Have you ever wondered how plants survive in areas with very little water?  There are several features that enable xerophytes to survive in hot climate. - They have thick leaves having fewer stomata and leaves are often reduced to spines of .....

Camels have long eyelashes and thick eyebrows. Long eyelashes help them protect their eyes from the sun and the blowing sand. Thick eyebrows protect the eyes from desert sun. Camels can close their nostrils completely so that no sand .....

Hydrophytes have many features to help them adapt in water.  - The body of these plants contain lots of air spaces that help them to float on water. You may have seen the lotus plant floating on the surface of water. - You may have noticed .....

Aquatic animals have following features to adapt itself in water. - Body is stream-lined (like a boat) in shape which helps to minimize water resistance which makes them easy to live in .....

The light weight of birds makes easier for them to move up into the air since less gravity is working against them. Rapid, efficient digestion in them minimizes weight of digesting food. Birds don't have bladders. These features in birds .....

We do different kinds of activities in our day to day life. All these require an expense of energy. Do you know from where this energy comes from? It is due to the presence of mitochondria. It is therefore known as the "power house of .....

Do you know about endoplasmic reticulum? The endoplasmic reticulum or ER is an organelle found in all eukaryotic cells that is an interconnected network of tubules, vesicles and cisternae. It is responsible for several specialized .....