Sarkar ki Blog

         Keller's Laws of Planetary Motion  Johannes Kepler was a 16th  century astronomer who established three  laws which govern the motion of planets (around the sun). These are known as Kepler's law of planetary motion. The same laws also describe the motion of satellite (like the moon) around the planet (like the earth ).  1.   Kepler's first law states that : The planet move around the sun, with the sun at one of the two foci of the elliptical Orbit.  This law means that the orbit ( or path) of a planet around the sun is an ellipse ( oval-shaped) and not an exact circle. An elliptical part has two foci, and the sun  is at  one of the two foci of the elliptical path ( foci is the plural of focus). 2. Kepler's second law states that : Eac h planet revolves around the sun in such a way that the line joining the planet to the sun sweeps over equal areas in equal interval of time.  ...

                             Newton's Laws of Motion     Newton has given three laws to describe the motion of bodies. These laws are known as Newton's Laws of Motion.  The Newton's laws of motion give a precise definition of force  and establish a relationship between the force applied on a body and the state of motion acquired by it. We will now  discuss these laws of Motion and consider some of their important applications. Let us  start with the first law of motion.             Newton's first law of motion Some of the bodies (or objects) around us are at rest, that is, they are stationary,  whereas others are in motion. Newton's first law describes the behaviour of such  bodies which are in a state of rest or of uniform motion in a straight line. According to Newton's first law of motion :  A body at rest w...

1. First Equation of Motion                 The first equation of motion is :   V = u + at. It gives the velocity acquired by a body in time t. We will now derive this first equation of motion.              Consider a body having initial velocity 'u'. Suppose it is subjected to a uniform acceleration 'a' so that after time 't' it's final velocity becomes 'v'. Now , from the definition of acceleration we know that :               Acceleration  = Change in velocity                                                       Time taken  Or   Acceleration  =    final velocity- Initial velocity                             ...

Physical Change       Those changes in which no new substances are formed, are called physical change. In a physical change the substances involved do not change their identity. They can be easily return to their original form by some physical process. This means that physical change can be easily reversed. The change in physical state, size and shape of a substance are physical changes.  Some common examples of physical changes are : melting of ice, freezing of water, boiling of water, condensation of steam, making a solution, glowing of an electric bulb and breaking of a glass tumbler. The physical changes are temporary changes which can be reversed easily to form the original substance.  For example the melting of ice to form water is a temporary change we can reverse this physical change easily by cooling water to form the original substance, ice. Some more examples of physical changes are Melting of ice; Melting of butter; Melting of...

Explanation about mixtures  A mixture is a substance which consists of two or more element or compounds not chemically combined together. For example, air is a mixture of gases like nitrogen, carbon dioxide, humidity, etc. The various gases of the air are not chemically combined with one another. Similarly gunpowder is a mixture of potassium nitrate,whereas brass is a mixture of Copper and Zinc. All the solutions are mixtures. For example, salt solution is a mixture of of common salt and water. The various substances present in the mixture are known "as constituent of the mixture" or "components of the mixture". Some of the examples of mixture are : Air, Salt solution, Sugar solution, Kerosene oil, Ink, Petrol, Lime water, Coal, Soil, Blood, Soap solution, Iron and sulphur mixtures, etc.     Copper sulphate solution is a homogeneous mixture  Types of Mixtures  Mixtures are of two types: 1. Homogeneous mixtures,  and  2. Heter...

  What is life? Life is a characteristic that distinguishes physical entities that have biological process, such is in signalling and self sustaining process, from those that do not, either  because they never had such functions and are classified as inanimate. How the life begin on earth? Microbial life forms have been and Discover on the earth that can survive and even thrive at extremes high and low temperature and pressure, and in condition of acidity, salinity alkalinity  and concentrations of heavy metals that would have been regarded is a lethal  just a few years ago. These discoveries include the wide  diversities near the sea floor ydrothermal vent system where some organisms live essentially on chemical energy in absence of Sunlight. Similarly environments may be present elsewhere in the solar system. Understanding the process that lead to life, however, is complicated by the action of Biology itself. Earth's atmosphere today bears little resemblance t...

What is Blog and Blog Posts? A blog is a website or part of a site that contains regularly updated content about one or multiple topics. The term is short for "web log," which means to log information on  a website. The content on ablog usually comes in the form of articles on individual web page called blog post.                             They can be used for anything that involves communicating for publishing information on the world wide web.common uses include teaching and educational and corporate use. Your blog can be personal diary, a project collaboration tool, a guide or any means of communicating and publishing information on the web. What are the types of Blog? Types of Blog are:- 1.  Personal Blog  2. Buissness B log 3. Professional Blog  4. Niche Blog  5. Reverse Blog  6.  Affiliate Blog 7.  Media Blog  8. Freelance Blog  ...

Explanation about neon gas  Neon is a chemical element with symbol Ne and atomic number 10.It is a noble gas. Neon is a colourless, odourless, inert monatomic gas under standard conditions,  with about two-third the density of air. Neon gas consists of single atoms,  what mass of neon contain 6.022 × 10 power 23.   Does Neon gas sink in kerosene if yes/ not ,then why? No, Neon gas can not sink in kerosene because Neon is in its gaseous state and kerosene is in its liquid state and gases can not sink in liquid but soluble in it. Why Neon is called as noble or inert gas? Neon is called as inert or noble gas because it unable to react with the other gases to form compounds. Example: Helium, Argon, Krypton, Xenon and Radon.  What are the uses of the neon gas? There are many uses from the the neon gas.Some of them are: 1.  Neon is used in Helium neon lasers, television tubes and wave tubes. 2. It's also used in lightening arre...

Today is Mother Day in India.  This day is very precious, because on this day we can make our mother happy and gives analysis to their children and mother how both  loves eachother.  Mother the Master architect of a child. The most important thing is that she loves us Unconditionally. There are not enough words to describe just how important our mother is for us. She gave us life, dress up, fought for us, shouted at us for doing any bad behaviour.  loves us, and thought us  many more things. On the whole Earth who understand us always is, Mother. She always being there for us always when we need her.  Mother is a word which feels everyone with emotions. A Mother is certainly the most important human being in everyone's life. Mother's loves for her children certainly cannot be compared with any things. Mother is the most important woman in everyone's life. A Mother sacrifice her happiness for her child. No one else can care for their ...

Explanations about Corona virus  Now a days many countries are suffering from corona virus. Due to corona virus the government are taking many suitable decision for the protection for everyone. From coronavirus do not scared more be alert.  This is the time that we have to be together and fight with corona virus. Or you can say that "this is the for showing our unity" , "oneness. But by following the instructions we can fight with coronavirus. It's cure from Corona virus for whom, who is positive  If you have mild symptoms, stay at home until you have recovered you can relieve your symptoms if you:  rest and sleep  keep warm  drink plenty of liquids   use a room humidifier or take a hot shower to help ease a sore throat and cough. For keeping safe from corona viral disease  1. Always wear a mask while going out  2.  try to avoid going to crowded place 3.  regularly wash your hands with soap a...

                                  Time In this world everything has its some importance,mainly Time has it's own importance. The Time which has spent it will never return or come back again.           Just as morning and evening comes and goes , Similarly our age or life are finish as morning and evening.  So always use the valuable Time in good work. The time is very precious in our life. If we use the Time in good work, then we able to get Success in our life. But in case of wasting the Time we will never get Success in our life. The Time not waiting for any one the Time always runs. So it is necessary to use the Time in the work for making bright future.  So, we should be punctual in our daily life.  Punctual means doing work in Time. If you waste Time, the Time never waste that means your bright future is going to be Vanish. So use...

5 Simple Tips for Fitness Success  1.  Exercise Daily. Exercise daily for at least  an hour.... 2. Eat the Right Foods and Portion Each Meal. No matter how bad your stomach is telling you to go for candy over healthy food, try to stay away from sweets.... 3. Keep Track of Calories and Foods Intake Per Day.... 4. Be Sure to Get Sleep..... 5. Stay Motivated. 

saheb                        About education  Education plays an important role in human life regarding to build their personality, carrier and mental growth. Education is the best tool for facing any up and down situation through the whole life. We can not only improve our personal life by education but also can bring an amazing positive change in society or nation. To provide education among people, society has declared some places as home to education like schools and colleges where some pattern are followed in procedural manner to offer quality education for the aspiring students. Currently government has majorly focused on the schooling system for students. It has been compulsory for children of age 6 to14 years to get primary education from any authorized school. In most state of India, education system is followed by 10+2+3 prototype which consist 10 years of primary (till 8th cla...